need info on gm supercharger...

Won’t work. I had a Grand Am GT for a few years and did a lot of research on the same idea. They make superchargers for the car but I wouldn’t even bother if you have a stock transmission. VERY VERY weak on that car with any kind of modding. Check out www.gaownersclub.com for more info on 90 degree V6 vs 60 degree V6.