Alright, so this thing is a 1967 Kaiser Willys J3000 Gladiator with the 'Thriftside' bed.
It has a AMC 327 V8 (Vigilante) under the hood which is a pretty impressive engine. Rated for 250 HP and a whopping 340 ft/lbs, the Vigilante is a stump puller! The down side is parts availability, there is little to no aftermarket support and even replacement parts are difficult to find. Apparently even finding a new starter for these engines is quite difficult.
The rest of the drivetrain should be a T18 manual and Dana 20 transfer case. The front axle should be a closed knuckle Dana 44 with drum brakes and rear is also a Dana 44 with 2 piece shafts and a bit of an offset to clear the gas tank. It has 126" wheelbase and a 7' long bed.
The last time this thing ran was 2005.... last time it was registered was 1991! It does have quite a bit of rust in the cab, the floor boards are shot. The bed floor towards the front is pretty rough, as are the sides of the bed at the floor in a couple places. Other than those places, its actually quite solid. The body is relatively straight as well, which is surprising. It's missing the tailgate unfortunately, which is the location where the 'Gladiator' badge was applied... so I'll be on the hunt for a replacement.