Stock Intercooler Aluminum Shroud This is a GN1Performance "STOCK INTERCOOLER ALUMINUM SHROUD" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This shroud bolts directly to your stock intercooler and features a large opening to maximize the... MSRP: Was: Now: $299.00