U talking about from American Muscle? New bearings are never a bad idea. How many miles on your car? The royal purple is great. I would reccomend using some regular gear oil first to make sure everything is good and nothing has to be redone. then put the royal purple in. that way you are not wasting royal purple if the seal leaks or the gears have to be adjusted and you have to drain it all back out.
yeah one of my friends is really considering getting a new edge so i have been hanging out over here some to start learning a few things about these cars......help him out a lil because he will be modding it