have a 3:23 ring and pinion for a 489 case like new. It is a (29) spline.I bet it doesn't have 300 miles on it. You can still see the yellow stuff he put on it when he built it to see how the gears meshed. I went to 4:10 gears and they are coming out in a week or so and I am going to a 3:55. so if you need a good new set of 4:10 let me know also. everything in the pic is included. Shims,12 bolts for ring gear. pinion nut and washer. $150.00 shipped.
