Some engines may look like an ideal plant form to get more horse power "baybe" but in reality they cant. Meaning your going to need to drop large amounts of "cheeda"! But not to end the feedback on a sour note, do the basic changes to your engine air intake, and 3' exhaust from sack to crack. For the headers look to see if the OEM are all ready large enough meaning some N/A cars there headers are just the same as if you went out and bought aftermarkets ones. Now, after doing all that get creative and start doing some home work on porting and polishing the head. This is again if you just love the car and just want to be a deferent soul on taking on a project NO one wants to do... After all is done look into ECU tune now that you have more air coming in and flowing out easier... Top Speed 2.5 freak! :)
