Used to have a 1980 IH Scout II with the SD33 I-6 till a rod departed the side of the block 
Loved that truck. Anyway, now I have the truck in my sig that's had about everything done to it you can imagine so wrenching on diesels is not new to me by any means.I just picked up a SD22 motor, mating trans with 5th gone (suprise, suprise LOL ) and two Truck bodies for a nice price. As soon as I get back home all those pieces and parts are going to be stuffed into a 1950 Willis pickup.
So far here's the plan, ya'll please tell me where you think I'm going wrong/right or if I'm just plain nuts.
Engine will be the aforementioned SD22, tranny I'm not real certain on, kinda thinking about having a bell housing made and using a 5 or 6 speed manual out of either a camaro or mustang since both came with removable bellhousing trannies. The rest of the driveline will most likely be a divorced T-case running to a set of GM 10 bolt axles with 3.73 gears and 31" tires. I think that will put the motor in the 2k range @ 65-70mph.
So far about all I have been able to do is look around a bit and scratch my head, found this great looking little site so I joined up to see what ya'll might have to offer in the way of info. I'm certain that as I get into the nuts and bolts questions will arise, so expect a few
Later,
Billy