I cannot remember the part number, but the shortest one I have ever found was for a (I'm pretty sure) 92-96 Jaguar. I spent a bunch of time going through the books at my local Napa, and that was the shortest clutch I was able to find with the proper rotation direction. I had to bolt it down with studs and nuts; a standard bolt won't fit in there. Even at that, the nuts are a PITA to get started with my big fat fingers. The bolt pattern and the hub diameter were just fine for a Ford.
Hope this helps,
Brett