A body Steering Boxes

From BigBlockDart

Most of these boxes used bushings throughout, however, the B-body V-8 units were built for more abuse and used bearings internally instead of the bushings.

So without starting a new thread, is there any advantage to using a B body manual box in an A body?
I rebuilt my original 16:1 manual box 15 years or so back and I remember it having all bearings no bushings.