I forgot about the heater. New 12 v motors are generally available for about 30-$40 at local auto parts store.
Search in electrical forum for details on that.

In my experience the 6V starter will be just fine and dandy, and crank with authority on 12V
https://www.stovebolt.com/ubbthread...7279/Easy/cheap_heater_blower_motor.html

Last edited by Grigg; 11/29/2018 5:46 PM. Reason: add link
•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-