[blucar]

Did not note this thread earlier, must have been asleep...
This topic is bantered around on a regular basis, usually with the came content, just with slightly different opinions.
I have installed several 8BA/8CM. 49-53 engines into '36 and later Ford vehicles. Generally speaking it's a pretty straight forward deal if you use the '49-53 truck water-pumps with the '49-50 Merc U shaped spacers to correct for the mounting bolt offset. The truck and/or Merc bellhousing has to be used.
As a general rule truck water-pumps will have pulleys for the wide fan belt, where-as the car engines will have narrow pulleys for the narrow belts.
In a '36 it is especially advisable to use the '36 "log" style of exhaust manifolds.
I have attached a couple of pix showing an 8BA in my friends '37 pickup. Note, in the pix you can see later model exhaust manifolds, which were changed to '37's before the exhaust was hooked up..