i have a grand prix gt2 with 170xxx miles on it and it shifts hard sometimes me i thank its about to go so i was going buy a new tranny but i wont to put the tranny out the SC since im goin to replace it but i wont it to make sho it fits and will it upgrade my speed performance off the line and what gear retio should i get plez help buy tranny next week and if u no a web page that has tranny for a good price that will help to