fast84

Part numbers for the headers and y-pipe please. You did say 07 nnbs truck right??? Where did you purchase them? Thanks.

nighthawk08

The pacesetter truck headers from 99-06 models fit the 2wd GMT900 trucks.

GMCtrk

iTrader: (27)

In my experience, headers make no difference below 3000 rpms over the stock exhaust setup. Also, if that's a 4.8 or 5.3 under the hood, it's my opinion that a 3" y pipe is simply too big. Even with a 6.0 I have preferred a 2.5 inch Y pipe over a 3". It's a better compromise between exhaust velocity and top end power in my opinion.

gdev_

The coated headers are Part # 72C2265. The midpipe (ORY) is 82-1176.