I can't help with the technical stuff (I'm more of a fitter than a mechanic).
In my case I used all the parts from a 1991 XR4x4, then added the bigger brake discs and calipers with their hub carriers from a Cosworth 4x4.

The system control box says "For four wheel drive only", and the sensors are (apparently) different, so I don't think you can mix and match components. you would probably be best to try and get everything you need from a single car - probably cheaper that way, too.