Re:your opinion........ better junkyard mani..... HF or STD
 

I see your theory, but the better flow means the the faster the revs will rise, meaning quicker spool. Just think of what happens when u take out the catalytic converter.

Re:your opinion........ better junkyard mani..... HF or STD
 

I say just get what you can and go, don't hold yourself down waiting on a certain manifold.