1. dana 44 is not good for any engine over 35"tires.
2. the 6bt is close to a bolt in if you get a 89-93 donor truck.
3. the diesel 727 trans has a different bellhouseing bolt pattern than the gas.
i would find a 4x4 donor truck wrecked or something and you would have the near perfect drivetrain. 6bt,727 trans, dana 60 front, 70 rear, and a married np 205 t-case. i will give dodge 1 thing they built 1 hell of 4x4 89-93.
oh p. s. im goin to run 39. 5 " tires with a 8";ift and 4. 10:s