Originally Posted by charlie03fastGT
I was looking at AM CAI and what would give mustang the most benefit one that goes into the fender well or a K&N that stays in engine bay?
The difference between power in a fender well CAI & a Ram air CAI is not huge. You may gain a few horse power more from an intake that is pulling colder air. But to be honest you really can't go wrong, I think you will be happy with either of the 2.
Let me know if there is anything I can do to help you!