Another heater project update. It took me a while but had to do some research on the correct motor as used the post-2201 series cars. I found that the motor used appears to be the same motor used in the Cortina MK1 and early Mk2. I located one in England and had it sent to the states. Once I had it, everything matched up with my measurements and photo's of the original Cobra heater.
The motor as it came out of the Cortina heater:
Restored, replated case and wires/sheath changed to match the Cobra motor.
The heater motor hole will have to be enlarged slightly to fit the motor but no biggie for a die grinder. Mounting holes are the same as the original Prefect heater motor. So now on to fitting the motor!
Larry