I think the Gen 2 box has a different ratio 3 total turns of the wheel compared to 3 1/2 on gen 1 . Don't know if that much would make too much difference for a SWB.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.