If it was my car, firstly I wouldn't have bought a defected skyline but bov, Exhaust, needs to be std. If the body kit is dodge, fix it or rip it off. Can't have any oil leaks. cv or steering rack boot leaks. Check kid interior for turbo timer. Seat belts in good nick. Std air box and Std cooler helps. Std suspension. Pretty much if you bought it defected ill take it back to a Std skyline. Go to regency once, saves time and money. Good luck