I have a 2000 silverado Z71 ext cab 5.3 . I have installed a comp cams thumper cam, comp magnum pushrods, Beehive valve springs, double roller timming set, short headers, dual exhaust w/ flowmasters, custom cold air intake, 315/70/17 tires on 04 17" tahoe wheels customised by me. painted dual racing stripes and side stripes, dual hood scoops, HID headlights, LED tail lights, chrome grill, custom painted clear bug sheild, custom aluminum coil pack covers, 4" custom exhaust tips made by me, Proud that except for exhaust system I did all work.