Hi guys ,

im new to the forum just had a query i have GSC 02 housing but i wanna change my downpipe ....which downpipe will fit directly onto the GSC 02 housing....i have the choice of buying a blitz one or HKS one ......please some guidance needed

 

The GSC O2 housing is a stock replacement, so it will fit any and all aftermarket downpipes that are sold as bolt on pieces.

 

+1^^