Are you not asking for suggestions?
If you really want a fast 4 door, you're going to have to look into import/awd platforms really...but those cars get expensive with high horsepower. I boosted G8 would be plenty of power to get you into trouble.
My suggestions are (as Bio stated previously) something older. Such as:
-79-87 Malibu, they get amazing traction...can be had cheap. This will allow you to to focus on the go-fast part..the engine.
-Fox body...same concept
-any 2nd through 4th gen F-Body
-Nova
-El Camino (79-87 is basically same as a Malibu wagon of the same years)