how can something with a soild rear axle handle better ? ok go ahead and spend $3,500 on a paxton and have 450 hp. you can do the same with the 04 gto. heres a link of a local speed shop with a guy that put a supercharger on his 04. speed costs money how fast do you wanna go ?
http://www.exoticperformanceplus.com...Car.php?car=24
keep in mind the 05 has 50 more hp then the 04.