1997 GMC Z71! We upgraded wheels, tires, lift, headers, exhaust and intake! The wheels are 17x9 Fuel Throttle, wrapped in a 305/65R17 BFGoodrich Tires A/T KM2. The suspension was upgraded to a 4" Rough Country lift. The headers were upgraded to JBA headers. The intake was upgraded to a K&N Filters intake and last but not least the exhaust was upgraded to a Flowmaster Mufflers INC. dual out exhaust!