Gmt 900 Headers

[09Jimmy]

Anyone have longtube headers on their new truck? Does anyone make them besides Dynatech? Please post brand, fit, performance if you have them. I have read on the net that the 99-07 Pacesetters fit, and if so, what about their off-road Y-pipe? Does it mate up with the cat-back? Seems unlikely. Thanks!

[Ryan00TJ]

I know American Racing Headers recently released a set for the GMT900 and from what I've read, they blow the DynaTech's away. Do a little searching over at Performance Trucks GMT900 forum.

[09Jimmy]

Thanks alot Ryan. There was a ton of info on the first page over there. Here's some info for those interested: Pacesetters only fit 2WD and the Y-pipe needs minor mods to work. Dynatechs are shinier than the American Racing but the ARs fit better, have a ball and socket gasketless collector, have spun cats and have slightly longer tubes that are more equal length. Expect 30-35 RWHP gain with a tune. All sound crappy and fart when switching from V8 to V4 but sound okay after the switch.

Many thanks Ryan for the heads up on that forum.