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Headers fit perfect, no issues at all. And the sound absolutely incredible. Highly recommend both the parts and LM Performance for the purchase
Silverado 5.3 with intake, exhaust, custom tune, and now headers
ARH LongTubes 1 7/8 Primaries, 3 Merge Collectors, 3 X-Pipe (No Cats) Mustang 5.0 2011 V8
Performance and looks is great. The package comes with everything you will need. However, the X pipe fitment leaves something to be desired. The X pipe fits in such a way that it dips or hangs lower than the rest of the exhaust. My local exhaust shop tried flipping it every way concievable and at best it hangs. Since my car is lowered it scrubs on everything. Looks like I will toss it out and build a custom X pipe.
Built short block, fully ported heads, Boss intake, 90mm Ford Racing throttle body, Stage 3 Comp Cams, Paxton Novi 2200 w/ 3.33" pulley, JPC return style fuel system, 80 lb/hr injectors, American Racing 1-7-8" headers w/3" X pipe, Magnaflow Competition catback, Mcleod RXT clutch, aluminum driveshaft, 4.56 gears, UPR upper & lower control arms, MT 28x12.5x 15 ET streets, Cobra Jet struts, shocks & springs, N2MB wide open throttle box & 2 step, plus much more....
ARH LongTube 1-7/8 304-SS Headers for GM Trucks 1999-06 Full Size 6.0L / 5.3L / 4.3L with Cats
They got them to me very fast and witb no problems what so ever. Did the installation my self and it was super easy to do. They are built exactly right for the vehical you choose. It makes the sound much deeper and more gutsy, plus the added MPG is great.
American racing headers and cats
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