I think it does work and fit. the only difference to them? is I believe the connections to the transfer case or if to your drive line. if I'm right yes you can use it. the only differences is going to be a spacer for it to hook up to the transfercase? not a 100% sure but do feel 85% sure.
The 400+ transmission does not work the same in both the 4 wheel and 2 wheel drives. This is because the wheels are of different sizes. Their performance is also different thus cannot be able to work on the two wheels.