[Robz51]

My Dad and I did this swap on my 52 Merc years ago. The mercomatic was tough and reliable but very slow. We found a car in a junkyard with most linkages (even the throttle linkage is different) and steering column, and pedals. You only need the clutch pedal and associated hardware. We got the transmission and clutch pivot bracket and equalizer bar from a 53 Ford ranch wagon. We found out later that the equalizer bar is different on Ford and Merc
As I recall everything else was the same, including the driveshaft. We also used a 4:11 rear as the 3:31 wasn't a good match. (We also installed overdrive). Best thing to do in your case is find a donor car to use the parts from.
Rob