Quote: I did the swap on my 8 1/4" rearend. The caliper mounting brackets bolted right up. I'm not familiar with the 8 3/4" mounting flange. The 8 1/4" uses four bolts. I was told the 8 3/4" has five.
This guy can tell you how easy it is for the 8 1/4.
Also I forgot to mention when machining the step for the snap ring on the green bearing I also had the make the hole in the center of the caliper bracket a little bigger to go around the green bearing itself some. It wasn't much. Which for the 8 1/4 you don't have to machine the bracket at all. It truly is a bolt on deal.
The 7 1/4 and 9 1/4 rear with the 4.5 on 5 patterns with the 2 1/2 shoes can do this as easy an 8 1/4.
