VERY SWEET! I think first thing first, is go for the gears.
I drive my dad's '90 T-Bird Super Coupe, and it's S/C. Not as powerful as a Mustang that would be Supercharged, but it's alot of fun to drive. I just love the sound of the supercharger. The best is slowing down to pull up beside a ricer, and the Supercharger is just winding down. =) Especially that the car has no cats, or mufflers it sounds nice.

Damit now I want a Supercharged Mustang, ohh.. well it's going on the Christmas list of things that I'm not getting.
§am.