Oh, Janine,
So sorry to not have answered your motor question.
Yes, the motors are all the same. Sometimes the bumper guard was half, other models were wrap around.
It was the same way with the Convertibles: one model had no light, no handle grip, half a bumper, snap bag. But, the HOOVER motor was the same. They used to call these the Convertible "Special".
The Handisac vacuum "family" all had the same motors as well.
I hope this answers your question. Again, sorry for gertting back to you so late.
John