GTO Racer

Hello guys i am new here and in the tuning scene. I could use any and all knowledge and assitance from the experienced people on here. I am buying a 94 Mitsubishi GTO vr4. It seems to have been altered since the steering wheel is on the left instead of right. Will that affect me altering the parts in anyway or engine swapping? Im completely new to this and my goal is to get this girl to at least 500- 600HP. I would like to know the most effective way to achieve this without wasting money on unnecessary ...