By rough measurement of the rims/tires I took off my 1101, the offset is about 2.5". No clue on the Military OZ. Mine have that as well.
The common civilian rim substitution is early 2000s Chevy, Ford or Dodge 3/4 ton PU rims. Sometime in the later 2000's they switched to metric sizes.
Replacement lug nuts can be found at OReillys. Dorman #611-052.