Well just to let you know you are probably going to get slammed for the neon. But to each his own.

Relatively inexpensive mods are intake, exhaust, and header. Make the car breath a little better. Also lowering springs matched with some aftermarket shocks would do wonders too.

Muffler tips are not cool. As are most items from APC and Pep Boys.

Body kits can be installed by yourself, but they must be painted.