^Fix the manifold you have and then replace the rest of the exhaust system. I hear the stock manifold will allow a bit more bottom end torque than a header, although peak horsepower (which you rarely if ever need on a truck like these) may be a little better with a header. Not sure if this is true, but Ted (engnbldr) told me not to waster my money on a header and just stick with the stock manifold, then free up the rest of the exhaust from there, and he seems to know what he's talking about.
Quote:
Originally Posted by DubVipers
thats what she said
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*DubVipers is castrated by other forum enthusiasts*
