If you've ever considered upgrading the spindly 7 1/4-inch axle that likely resides under your A-Body, you probably already know that A-Body 8 3/4 rear axles are not very plentiful these days.

The problem is, there's no drain plug or pan on the 8 3/4 rear end, no rear cover like the Dana 60, and no lines to disconnect like the braking or power steering system. So if you want to change ...