Im here because it seems like a good site to get involved wqith mustangs, I owned a 1967 Stang before, sold it for a Nova, and just yesterday I bought a hatchback 1974 Mustang ii.
Not to plant expensive ideas into your head, but wouldn't a coyote swap into a mustang II be a cool thing!?
I don't know if I've ever seen that done yet.
Have you gone to the subforum for mustang II's yet. You'll have fellow II enthusiast there that will be able to help out with your technical questions.