If you're thinking about doing your rear end and gears and can't decide let me be the first to tell you that it's well worth your while. I had my locking rear end and 3.55 gears installed and now the cat has crazy takeoff :lolani::lolani:. I was chirping the tires going from first to second gear. I got all my parts from ring & pinion gears and I couldn't be happier. I'm getting my carburetor tuned now because having the car sit outside in the cold revealed some issues with it that were hidden because it was always garaged. I got my X-mas present early this year.