you will easily gain 50-60hp from a good intake combined with a good header (such as pacesetter, APC, or BOMZ)- don't even bother spending money on an aem intake or other brand name- THe 20 dollar aluminum tube intakes on ebay will make more horsepower due to their velocity increasing innner coating- the extra hp gained from these modifications will require extensive modifation to your fuel system and I recommend looking into underbody aerodynamics to prevent all the extra horsepower from lifting your car off the highway, since there is no way you could race a beast like that on the track