Apologies on the thread rez, but I had this bookmarked and I was working on my own model 1949 blower today. I thought I had a bad motor, but testing determined it was a wiring problem. At any rate, before I got it figured out, I spent some time trying to figure out what the motor is from. I'm 98% sure that it's a window motor that fit a pile of 70s/80s GM vehicles, including some Suburbans as a tailgate actuator. I happened to track the picture down on Rock Auto, but many other sources will work. Look at the front left/right rear window actuator for a '76 Oldsmobile Custom Cruiser. Cardone P/N 82016 or 4216. The gear is listed as well, Cardone P/N 8290 or 4290.