buick tech help

are there any buick lesabre t type mods that can give me some more ponies? i have a hypertech chip. k+n air filter and a tornado -----(not showing me any fuel economy by the way!) -----------------------------
im hoping i can bolt on a supercharger but i dont know the spec and tolerances. the book at my shop says 8.5 to 1 compression ratio so im hoping it can handle a buick super charger .