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 External Wastegate Down Pipe is constructed out of 304 stainless steel and comes with a 46mm custom wastegate. All tig welds and is built to clear headers. The boost controller comes complete with all the hardware needed to install it
This item will not work on a lowered vehicle due to contact with the upper control arm.
