“It might be time for you to do some research as to what other model motors used that housing and start to be on the lookout for a parts motor”
If you were going to do what CK mentions there, to help broaden your search for a cheap parts motor, the 50s and 60s 5-1/2 and 7-1/2 HP and maybe the first few years 6 HP use that 376074 bearing housing and the 300599 > 327031 seal.
