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This is a GN1Performance "3.5 INCH INCH FLAT FLANGE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is our all new 3.5" Inch Flate Flange Downpipe constructed out of 304 stainless steel. All tig welds and is built to clear headers.
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