nolarob

Well I'm gonna give it a try and see. What headers were you running b/c I'm on the fence with Pacesetter or Dynatech? I ran pacesetter before but on 2wd not awd I'm worried about fitment.

BigCountry, I'm staying NA. I'm just worried about CFM for a modded 6.0. In your opinion do you think it would be more restrictive having 2 racing Borla XR-1 vs. one much larger street Magnaflow design etc... Rob

I would like some opinions here on new Sierra Denali exhaust setup. I'm currently running stock manifolds but will be running Dynatech LT with cats removed on new setup. I have 2 Borla XR-1 12" x 4 1/2" x 7 7/8" oval mufflers with 3" inlet & outlet from my Corvette that are laying around since I changed back to sidepipes. I want to install them inline on single 3 tailpipe to rear. Would this combo still be loud or too restrictive on SD? Rob