8 3/4 pinion depth

Yeah, I get what your saying, I know aftermarket gears like Richmond have the pinion depth marked on them, but it would be a pain to get that right unless you had a "set up" bearing for the pinion, that was slip fit...

I did just that I bought the set up bearings from Randy's. One for the 741, 742,489. They slip on and off, makes life a whole lot easier.