new 4x4 project in the plans

[44th Miss Inf]

My current truck is an 82 3/4T 4x4 with a 6.5 turbo diesel, NV4500/208C case 10 b front/14 b FF rear, 3.73 posi.

Just got home from a month overseas, and looking thru my parts pile, I have the following:
Another 82 3/4T 4x4 roller, same axles, etc minus front cap and doors, body in decent shape, missing a few odds and ends.

93 D350 Dodge w/ Cummins, and a rebuilt Dana 70 w/ less than 2K miles on rear (3.54 posi)
93 D250 Dodge (had a Cummins) w/ Dana 70 unknown miles 3.54 posi

80 model Chevy Dana 60 front end w/ springs, matching 14 b FF 4.56 gears w/springs(SRW)

Was think of one of the Dana 70s, w/ the 60 regeared to match, a Cummins, NV4500 and later 205 case. All I'm lacking is another NV4500 and the case. Thought of swapping some of my other parts, (about 7 BBCs, 80 model 4spd w/ 205) etc and build something like this, with possibly an 89-91 Burb/Blazer front cap. Truck would be used as daily driver, (reason for the 3.54s, plus the Cummins came stock with them) and also used to tow (pull a D5 dozer, and Kobelco track-hoe) a good bit, plus other things dealing with my father's logging company.

Would the Dana 70s be OK, or would I be better with one of the Corp FF rebuilt? Will measure the dually rear, if it is the same with, may use it, as I was given the receipts for the rebuild, and know it is in good shape.

Would like some of your input. The 6.5 just isnt cutting it any more, and was looking at the Cummins swap anyways.

Thanks
Virgil