Charlie, looking in the FSM on the Raider differential, it does look like the companion flange can be removed for machining and reinstalled without upsetting the gear pattern. If the SR differential is similar, I guess it can be done if the locating hub ring on both flanges is the same size.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum