Our resident MEL expert Royce B. is possibly deep in Engine Masters prep right now. I have little first hand knowledge, my info is from the Ford / Mercury parts books. I know the MEL and FE share the same flexplate reinforcing ring so the bolt pattern is the same. I don't have any parts books from before 1960 when manual transmissions were more common, very few Merc or Lincoln MEL's with a stick after 1960. I did find one instance where it looked like they shared a flywheel but I won't say that with certainty. I couldn't find any info on a MEL pilot bushing. I also don't know if there may have been any early / late MEL running changes in the dimensions like there was with the 429/460. Sorry, best I can do.