Help w/ 7 1/4 to 8 3/4 change over

You just need a 8 3/4 housing for an abody and year but as long as it's an abody 8 3/4 and buy new axles with the big bolt pattern
Plus shock plates, and then shortening the driveshaft. Then you have to think about brake drums and back plates as they will be different on the 8 3/4. So that usually means bake cylinders, shoes, all the springs, etc for a complete brake job. I'm doing the same conversion now. I didn't do the BBP though since we can still find wheels like cragars from summit that are up to 15x8 in size. I went to the big yokes as well on the rear end and will do the same for the yoke sliding into the trans.
And while its all apart, may as well refresh the leaf bushings and maybe replace the leafs if they are old.
Also, my sure grip (actually powr-lok, Dana part) clutches were pretty fried so those plus all the bearings were replaced. That was 500 bucks to get done, plus the ring and pinion from a 3:55 were taken from 1 pig and put into this one.
So, it adds ups really fast....