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headers

  1. Engine Swaps
    Hey everyone, I am working on a LS3 swap into a 2005 Colorado and I was wondering if anyone had luck with aftermarket headers? I've found a few forums that mentioned a few headers, but they didnt really help since they were for the '09 amd up Colorados. I read that doug thorley headers may work...
  2. I4/I5 Engine & Drivetrain
    I was wondering if anyone knew of any legal headers available for the 3.7L. If not, is there anyway I could modify existing headers to make them legal (adding cat after headers). I live in NY if anyone wants to know that.
  3. Want to Buy
    Like the title say I'm looking for headers that will work (that means no mods that need to be done to the headers, a little pounding to the firewall is fine) :salute:
  4. I4/I5 Engine & Drivetrain
    I HOPE SOMEONE IS JUMPING ON THIS. We need this...BAD !! Someone chime in if you have info. http://products.jbaheaders.com/research_development.asp
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