[kwhizz]

Because this was a small block car, it had a 10 bolt in it with standard gear ratio and a open rear ...........so, if I decided to change the ratio and add a posi unit, I would still have a 10 bolt (which would probably be fine) but I ended up finding a 12 bolt rear end that was missing the differential and the ring and pinion......I bought a 3:55 Ring and pinion, a new posi unit and we are good to go now without the worry of breaking anything with the LS power........the 12 bolt also has 2 upper stut rods where the 10 bolt only has one......gotta order another one from Ridetech.......the rear Disc brake set-up is the same for the 10 or 12 bolt.........Moving along....