Thank all of you for these helpful info. I'll post up some pictures when everything is done, any comments or suggestions will be appreciated. So far I leave the original engine alone, but upgraded to ACT clutch, tokico illumina suspension( cut 1/2" more), 240z fiberglass bumper conversion, Rota deep dish 17x9front & 17x9.5rear, used 280z air dam ( got for free), 8000k HID kit with 7" round projector headlights, ZG fiberglass fender flares, and Motorsport type 2 fiberglass side skirts. My next round will be rear wing, rear skirt, upgrade brakes ( if I can find a cheaper way instead of buying the full kit), upgrade to cross flow radiator, upgrade to K&N intake with wider throttle body, and finally cover the beast up with gun metal or midnight blue paint. So, what do you guys think?