This is my 1999 Poniac Grand Prix GTP. It's a 2 door coupe. I'm going for the black on black look. I haven't put anything in it performance wise yet. I've just did stuff for looks.It comes stock with a supercharger. Which has a Eaton Model 90, 3.8 inch supercharger pulley. This pulley will push about 7.5 to 8 pounds per square inch (psi) of boost.