yea, I know so little about the systems that this may not be do'able for me. As far as fitting :) I read about one with a GM LS engine so it will probably fit. I once shoved a 454 in an S-10 and more than a couple small blocks into Vegas and monza's back in the day. Even if I went with the 4.6 it's the EEC (new term in my vocabulary) that would still be the big question. I love the car and the near 50/50 balance is a blast to drive so an aluminum engine is my first choice. The girlfriend went and got a 04 545I with a 360 hp v8 so some pride lost as she blew my doors off....lol Not complaining though she loves cars so it's cool.