Two options to try and answer the OP's original question:
1. Later model Jeep ZJ Grand Cherokees with the 4.0 straight six (avoid the ones with the V8 engine). I'm partial to the 1998 model (last year of the ZJ) with the 242 transfer case. The 4.0 straight six is an excellent engine, and they come with solid axles front and rear. Weak points are the ignition modules, and the rear end (on this one we swapped out the factory Dana 35 for a Dana 44 from East Coast Gear Supply - the 44A ["A" means aluminum center] rear axle that comes with the V8 is an oddball axle with minimal aftermarket support). Jeep made a ton of ZJs, parts are readily available, and they are easy to work on and modify. This one pictured (98) has an IRO 3.5" lift and 31" tires, 4.10 gears, 9500lb Superwinch, and tru-tracs front and rear (and over 200,000 miles). First picture was taken up in Canada along the Dempster Highway, second picture was on the same trip somewhere in Canada.
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2. 1996 or later
Gen 2 (second generation) Dodge Ram 1500 4x4 (OBD II started in 96 with these trucks). Two engines were offered: 5.2 or 5.9 V8s (318 or 360); both will work well. Solid straight axles front and rear. A plus if you can get one with the extended cab. Solid trucks, and like the Jeep GC there were a lot of them made, parts are readily available, and they are easy to work on. Weak points are the intake manifold plenum gasket, and the auto tranny. This one pictured has a Skyjacker 2" lift coil, 2" rear add-a-leaf, 285/75/16" tires (33"), 4.10 gears, 5.2/auto, and tru-tracs front and rear (with 225,000 miles). A Posi-Lok will easily take care of the sometimes problematic front axle's CAD vacuum activated system
http://4x4posi-lok.com/app_dodge.html
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Fuel injection is nice to have, and having OBD-II capability is also a plus. Both of these pictured are at least 20 years old.