A833 OD 340 4x4?

You can drive the crap out of the first three gears of the A833od, but when you stick it in "fourth" you gotta remember to lift off the throttle. I forgot that twice, and each time it cost me a trans.

If you just wanna have fun, then the 360/5.9M/ 2WD/ 3+1 will provide that, but not with intentions of Rapid-Transit in the 400M. The gearing will be all wrong for that.

But you could stroke either engine, put an A518/ transfer case in it, and a quarter-mile friendly set of gears in it, that would do pretty good in overdrive.
Suppose you build a modest stroker that hits 105 in the quarter. This with 30" mudder tires would need 3.91s for 105=~5100 @ 10% TC slip
And 3.91s with 30s will cruise in OD at 65=1965rpm in lock-up, which with a 210ish cam, is just about the minimum rpm for fuel-economy. Of course a stroker with a 210 cam is pretty tame..... except when it comes to playing in the mud. And isn't that what you want?
I think it's probably overkill for that 88Dak, but that's how it works when you want to cover all the bases. 105 is plenty quick in the quarter, being about 340 hp at 3800 pounds, at sealevel. So that is a very modest build; 340/408=.83 hp per cube.My car got into the 12s going 105, spinning the 245/60-14 tires most of the way.