I thought the later coil spring rear models ,,,possibly only the 3.5 SOHC models had a "Hybrid" LSD(whatever that is).
I've seen a 98 3.0 leaf rear with disc brakes and an LSD diff., 4.36.( An easy brake improvement swap for you 4 cly guys).
Most 3.0s I've seen came with either an open diff or LSD with drum brakes.
I like the looks of the later 3.5 models, seems they have more headroom,,,,I just wish they had the V5MT1 option.

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.