Ok I posted once before about my rear end I have a 92 Z28 with a stock 323 post. And I just found a 410 post. But the other rear end is not set up with disc brakes so I'm going to have to pull the ring and pinion and post unit out. And install it in my rear end. What I like to know is I'm thinking about going to the track and run my car in the 1/4 mile. What do you think it will run with the stock rear end and the 410 rear end. Also what else should I do to the car to run it at the track.