the one pictured is a replacement hardened one, all the ones youre gonna buy new are hardened, they started doing it on 2003 up models. You will never have to worry about it stripping out, its heat treated. You will burn 4th clutches before you think about stripping it out. ZZPerformance

other places have them too, this is just one site. How many miles your car have on it? I will say it can be done in the car, because i did it myself in about 4 hours.

Logan