[2010_5thgen]

i dont know why manufacturers dont realize the 6.0 is in the 07 too. just because the escalade and denali got the 6.2 in 07 they think the hummer did too. i actually called a company about this issue for their product before. they told me the testing was done on the 6.0 and 6.2 but they had no testing done on a 07 6.0........WTF does that mean?!?!?!

as far as OBX, my dad has them on his 06 vette. nice setup. sounds good. not as loud as other brands. maybe thats from the cats installed? i dont know. but the O2 sensors are alot further away on his setup than the stock o2 sensors were. he had to buy extentions for the sensor. still a nice kit. alot of people sont liek them because their a knock off of kooks headers....but i dont care. their nice....and really cheap. about the price that kooks hjeaders should be at instead of 2k a set.