Pacesetter Performance Y Pipes improve exhaust flow, resulting in increased horsepower and torque, eliminating a bottleneck in the exhaust system. Made in the USA! This item is used in conjunction with the Pacesetter Long Tube Headers (part 70-2253 or 70-2255 or 70-2256). If you are not using Pacesetter Long Tube Headers, this part will not fit. The part number for this item is 82-1163 and it fits 1998-2002 Chevy Camaro 5.7 LS1 models with Pacesetter 70-2253 or 70-2255 or 70-2256 LONG TUBE Headers.