Welcome to HS...Gald to have you aboard!!!
You will find out those answers and more here....
but...
Exterior
rims/coilovers-lowering springs/Carbon fiber Hood/body kit/strobes
Interior
shift knob/e-brake handle/reverse or indiglo guages/autometer guages for diagnostics/racing seats
custom sub box/LCD monitor/PS2-PS1-Dreamcast etc/DVD player/
Performance
Cold Air Intake/header/exhaust/fuel pressure regulator/turbo/plugs/wires
for better responses do post in the respective forums...hope this helps....
