Well, I can tell you from experience that the Haynes / Chilton manual method works, although I didn't follow it step by step. In a nutshell, I supported the engine with one of those handy dandy engine support tools, then removed the subframe. After that the job is fairly straightforward.
BUT...
After I finished with everything and reported my work to Terry Haines, the man who rebuilt my trans, I was asked a simple question. "Are you crazy?!" he exclaimed. "It's a whole lot quicker to remove the whole engine trans subframe assembly and deal with it on the ground." Now keep in mind that Terry is a master with these cars. He has forgotten more about them than most of us will ever know. I argued with him a bit but it sounded like he was right.
Upon further investigation into the Mitchell repair manuals on CD (at the shop), I found that the recommended method was to remove only the trans, but as a side note it mentioned that the entire engine assembly could be removed as an alternative to using the engine support tool.
Still not satisfied I took out my Ford service CD, which I had never used at this point, and did some more digging. Ford's own service manual instructs to remove only the trans leaving the engine in place.
It looks to me that it is a matter of preference. Terry is probably right, that it takes less time to remove the entire thing. I suspect however that it would only hold true with repeated experience. In any case this is not a job to be done at home. It requires more space and tools than most of us have lying around. Your best bet is to find a shop that deals in clutches primarily, like Clutch Doctors. They will certainly have experience with these cars as there are quite a few out on the road.
Geez, sorry about the long post. Next time I'll write a book!
4 Speed MTX...synchro and shift fork replacement in progress 
