808muscle

Cams will prolly give you the most HP but you will want long tubes to get the most out of them. Each mod only gives so much HP, but when paired with other mods you get more out of all of them.

patrick

jerjan

Having been there and done that and pulled stuff off that didn't perform well I would do the following. First off decide the future of your car. Do you plan on supercharging it later on? If you do, then modify things that can stay on the car. #1 Gears 3.73 is the lowest you need for a supercharged street driven car. 4.10s are too low for an SC on the street.
#2 Aluminum driveshaft, one of the best mods! Remember a shifter won't make your car faster. Cold air intake and tune are good, you can easily sell them later. Nitrous is great, as long as you can afford the refills. And you can sell it later also. Exhaust components will yield minimum gains and they really aren't needed if you supercharge.