Easiest thing to do is buy a donor 1500 with a manual transmission to swap over, it would have to be 4x4 also.

 

I know it's insane but they are a good transmission.

 

He needs a 2500 for the 360

 

A NV3500 out of a 318 1500 will bolt right up.

 

If you find a NV4500 behind the Cummins or V10, you'll need to swap the bellhousing because it won't bolt to 5,9.
Also, neutral safety switch needs to be either rewired to the clutch pedal (if there is a switch), or just connect the two wires so you can crank the engine.

 

NV3500 won't last behind a 360 if you have a heavy foot

 

The NV3500 is a lot stronger than people give it credit for, they hold up fine behind Jeeps with LS swaps and 40" tires.

 

In a vehicle that weighs about a third less than a truck...... As a last resort, I would go there, but, given a choice, no. Wouldn't use the 3500.

 

A Jeep with 1 ton axles, 40" tires and armor isn't light. The NV3500 holds up fine behind the 318, a 360 doesn't make a whole lot more torque that a 318. 400 ft lbs seems to be the safe limit for the NV3500.

 

That is VERY true. I suspect that a lot of the problem comes from having a 5500 pound plus truck, with 3.55 gears, and big tires... that puts a LOT more strain on the trans. The jeeps likely are still under 5000 pounds, (maybe under 4K....) but, they are going to have MUCH better gearing in the axles, to go alone with those fat tires.

Still and all, if it was me doing the job, I would still want the NV4500, if I could find one for a reasonable price.