Doesn't have to be that way, just that is just how most used to build them. I see Marlin sells their bolt-in crawl box w/either, so you if you buy one with 4.7's, then you would have 4.7's in the front case and stock 2.28's in the rear.
Got it – Thanks!
New thread might be helpful depending on what path you go once you get the parts, buying crawl box vs buying a used t-case, gears and installing them yourself, for now you are good, 2 pages isn't long.
Thanks for the feedback, will keep on going for now!
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack