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" Down Pipe with a V-Band 46mm External Wastegate This is a GN1Performance "3.5 INCH EXTERNAL WASTEGATE DOWN PIPE WITH A 46mm WASTEGATE" 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 External wastegate downpipe... MSRP: Was: Now: $650.00 Choose Options
