Mainshaft mod
No pre-requisites
The original Warn design had a flange where the red arrow points. The bearing was pressed on from the rear, and held in place by the snap ring. It made assembly and disassembly to/from the transfer case kinda difficult.
The Saturn new design does away with the flange, and puts the bearing inside the spider hub. I had the flange removed by a machine shop to use the new, easier design.