3800 turbo will do just as much as you need for your car to be insanely bad ass. An LS1 would be crazy but you would just be eating transmissions like candy.
Yea I wanted to do a 3800 supercharged swap but the turbo sounds just as awesome lol
1995 Grand Prix SE 3.1L V6 N/A 216,000 Miles
1998 Grand Prix GT 3.8L V6 N/A 211,000 Miles (RIP)