For Use w/Flowtech Header Part Number 11504FLT, Fits 88-95 Chevy PU 2/4 WD, 305/350 Engine. Flowtechs Y-Pipes Are Ideal For Connecting Standard Flowtech Headers To Your Stock Catalytic Converter Equipped Exhaust System.. Use With Flowtech Header P/N 11504FLT_x000D_ 1994-1995 models require modification to the stock exhaust