Quote:
Originally Posted by Infidel
Your answer is forced induction, it's the only way to real gains. Everything else is chicken scratch especially if you're used to how hard a bike pulls.
Hope you have patience. 
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Quote:
Originally Posted by SOUTHZZ
With a A/T 370,just go with a FI(supercharger is good for A/T).Headers are
a waste.Bling up the plumbing on your intakes with polished tubes.Drop in
K&N's.HFC's are best.In love the Amuse exhaust for the 350.Check on the 370 version.
Your are not gonna get the power increases youthink with the stuff you have listed.
Whats your budget?
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He's already said no engine mods, so FI is out the door right there.
Besides, the AT would need just as much spent on it to handle FI as the motor, not worth the cost.
The Amuse exhaust is way too expensive and doesn't give the best gains. He's not looking for "massive" gains. Probably just more response feel on the ol' butt dyno.