It will work. It pushes the transfer case back 1" from stock. It may or may not cause problems with the driveshaft lengths.
There are a few ways to adapt it. Advanced Adaptors makes a nice kit. There is a way to use an adaptor and a 6 cylinder intermidiete houseing. At one time there were kits that used an adaptor that was 2 cast parts welded together. I have them listed in order of what I consider preferences.
Other then the 1" added length the swap is the same as the NP435 swap.
Just to be sure, what is the T18 out of? Hopefully it will have the Ford pattern for the bellhousing.