Alright well the 99 svt already has 03/04 rear and side skirts on it. black chrome fr500s lowered basic exhaust intake setup. black interior black leather. Motor wis is almost the same as ours a few more horse not really enough to make a difference. but the motor can adapt 03/04 parts straight up. downside is IRS rear end though. Has a returnless fuel setup so more power later makes it harder with that as well. idk!!
Why do you say IRS is the down side?