I may be mistaken on some of my recollections, but I think the difference with the T-cases has to do with an added function or unit between the tranny and T-case for the TOD on/off. However, if mods are going to be done, you might as well try to do something else. Plus, old Troopers for years had automatic hubs for front axle disengage/engage. Drive forward in 4wd they engaged. go to 2wd back up several feet and they disengaged. They werent the stoutest hubs, but also one of the aftermarket companies warn?, superwinch?, etc. had an auto hub that also you could get out and manually engage for "rougher" use. For what its worth to ya.