Dalbuie,
I'm not sure how many parts will interchange with yours, but I have a 1950 Stovebolt vacuum motor sitting on my bench that I've just taken out of my truck; let me know if it's any good to you and I can send it by post.

Stuart.

1950 Chevrolet 3100 (occasionally working) truck:https://c2.staticflickr.com/6/5490/30684982201_6dc479d18d_c.jpg
1928 Chevrolet AB National Phaeton: https://c4.staticflickr.com/6/5573/30137792083_42886d30a4_c.jpg
1932 Austin Special Sports: https://c8.staticflickr.com/6/5793/30116567183_1520e67c4d_z.jpg