4" Inch GN1 Single Shot Stainless Steel Catback Exhaust System MSRP: Was: Now: $599.00 Choose Options
3" Inch GN1 Single Shot Stainless Steel Cat Back Exhaust System MSRP: Was: Now: $599.00 Choose Options
AC Drier Heat Shield This is a GN1Performance "AC DRIER HEAT SHIELD" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is a nice item for those who are running A/C in their cars and need it to perform at its absolute best. This item... MSRP: Was: Now: $169.00 Add to Cart
Precision GEN 2 46mm Wastegate This is a "Precision PTE GEN 2 46mm Wastegate" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Precision Turbo and Engine Gen2 Wastegates Precision Turbo and Engine Gen2 wastegates are high-quality, economical, and... MSRP: Was: Now: $399.00 Add to Cart
KB4 Stainless Steel Headers with Wastegate and Blow Off This is a set of GN1Performance "KB 4 HEADERS with 46mm Wastegate, Blow Off Tube, and Boost Controller Combo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Included in this kit is a custom welded passenger side... MSRP: Was: Now: $999.00 Choose Options
SE Headers This is a set of GN1Performance "SE HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports. These headers are only available in none polished raw stainless finish. They are complete... MSRP: Was: Now: $949.00 Choose Options
KB4 4 Bolt Stainless Steel Headers This is a set of GN1Performance "KB-4 HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.The difference between these and the regular "KB Headers" is a 4 bolt flange rather than a 3 bolt. They... MSRP: Was: Now: $849.00 Choose Options
KB3 Stainless Steel Headers with Wastegate and Blow Off This is a set of GN1Performance "KB HEADERS with 46mm Wastegate, Blow Off Tube, and Boost Controller Combo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Included in this kit is a custom welded passenger... MSRP: Was: Now: $999.00 Choose Options
KB3 Stainless Steel Headers This is a set of GN1Performance "KB HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports and are welded all the way around each tube! These headers are only available in none... MSRP: Was: Now: $849.00 Choose Options
Header Clamps This is a pair of 2.25" heavy duty header clamps. These work on aftermarket headers only. Replace your old clamps with new ones as a good insurance for them not to break on you. MSRP: Was: Now: $59.00 Add to Cart
Copper Header Gaskets This is a set of "COPPER HEADER GASKETS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Clean, flat surfaces are essential to a good seal and the best way to seal a exhaust is with Copper exhaust gaskets. MSRP: Was: Now: $59.00 Add to Cart
Porting Exhaust Housing This is a picture to show how much your exhaust port should be ported when going with an aftermarket external down pipe. MSRP: Was: Now: $0.00
Exhaust Band Clamp This is a Stainless Steel Flat Exhaust Band Clamp. Available in 2.25" 3" and 4". Please choose from the options box the desired size. MSRP: Was: Now: $21.50 Choose Options
Boost Controller This is a Boost Controller which is good for up to 50psi. It comes complete with all the hardware, fittings, and mounting brackets necessary. *Please note, all manual boost controllers are to be used with EXTERNAL wastegates only. MSRP: Was: Now: $99.00 Add to Cart
4" Inch GN1 Single Shot Stainless Steel Catback Exhaust System This is our ALL NEW GN1Performance "4" Inch Single Shot Cat Back Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, or Turbo T 3.8 liter turbo V6. This 4 inch exhaust kit comes complete with... MSRP: Was: Now: $599.00 Choose Options
4 INCH V BAND AND CLAMP This is a "V-BAND AND CLAMP COMBO" kit comes with a stainless steel v band ring and a heavy duty t clamp. This is a great item for those who would like to build their own custom down pipes. MSRP: Was: Now: $45.00 Add to Cart
3" Inch GN1 Single Shot Stainless Steel Cat Back Exhaust System This is a GN1Performance " 3" Cat Back Single Shot Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, or Turbo T 3.8 liter turbo V6. This 3 inch exhaust kit comes complete... MSRP: Was: Now: $599.00 Choose Options
3" Inch GN1 Dual Stainless Steel Cat Back Exhaust System This is a GN1Performance 3" Cat Back Dual Exhaust System for a 1986 or 1987 Buick Grand National, T Type, or Turbo T& 3.8 liter turbo V6. This 3 inch exhaust kit comes complete with custom mufflers, mild steel U-Bolt clamps, and hangers which is... MSRP: Was: Now: $849.00 Choose Options
3" Inch Exhaust Test Pipe This is a GN1Performance 3" Exhaust Test Pipe for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel. This pipe is 13.25" in overall length. MSRP: Was: Now: $149.00 Choose Options
3" Inch Exhaust Cutout This is a GN1Performance 3" Exhaust Cut Out for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel. This pipe... MSRP: Was: Now: $169.00 Choose Options
3" Down Pipe with Internal Wastegate This is a GN1Performance "3 INCH INTERNAL WASTEGATE DOWN PIPE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Internal Wastegate Downpipe is designed to work with...
3" Down Pipe with a Flat Flange no Wastegate This is a GN1Performance "3 INCH FLAT FLANGE DOWN PIPE WITH " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Down Pipe with a Flat Flange and... MSRP: Was: Now: $399.00 Choose Options
3" Down Pipe with a 46mm Wastegate and Boost controller Combo This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE and BOOST CONTROLLER COMBO " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch... MSRP: Was: Now: $649.00 Choose Options
3" Down Pipe with a V-Band 46mm External Wastegate This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch External Wastegate Down Pipe is constructed out of 304 stainless... MSRP: Was: Now: $585.00 Choose Options
3.5" Inch Exhaust Test Pipe This is a GN1Performance 3.5" Exhaust Test Pipe for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.This pipe is 13.25" in overall length. MSRP: Was: Now: $149.00 Choose Options
3.5" Inch Exhaust Cutout This is an all new GN1Performance 3.5" Exhaust Cut Out for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.This pipe is 13.25" in overall length. MSRP: Was: Now: $169.00 Choose Options
