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  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. Engine Swaps
    I'm searching around and can't seem to find a thread, or any contents within another, that outline which manifolds/headers work with Gen III or whatnot swaps. I've discussed it a little bit in my build thread, but I'd like to have a stickied thread which has details of what headers/manifolds fit...
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