Ive finally researched enough to figure out....
Lesson 1: there are 2 styles of electric
earlier (assumed) is a vertical install with a 5 pole motor
and originally came with a 4 solenoid bank for reversing (which can be replaced with a modern 4 pole reversing solenoid)
Later style has a right angle motor/gearbox similar to lewmar
currently, a 3 pole motor and had a 3 solenoid bank, which can be replaced with a standard 3 pole reversing modern solenoid.
New motors can be found for either