did he delete the warranty part. I dont see him saying anything about warranty. The only way to keep the warranty is if you get a GM performance tune for your cam. Im not sure if they're ok with headers. Do go Long tube headers.
2012 2SS/RSM6 Silver with Painted CarbonFlash rally stripes,3.91gears, NewEra ported TB,OTR, HeritageGrill, NightFury cam, Melling296 Oilpump, KatechCR-5 chain, Cloyes LS2HD tensioner, PAC 1205x springs and Comp Cams trunion upgrade. American Racing1 7/8"LT headers w/cats, and TWM fullShifter BMRsways,trailing arms,toe rods, delrin cradle bushings,BK039rear control arm bushingkit,front suspension bushing kit. Solo Mach XL exhaust 25% Fluidampr