Well, shucks: this site indicates that the '37 trans bolt pattern is not the same as the 41-48: http://chev235guy.blogspot.com/search/label/Transmission%20Bolt%20Patterns

However, I did find a '37 car bell housing for sale on ebay: https://www.ebay.com/itm/402212145297?hash=item5da5b64891:g:Iq0AAOSwXepejhWX

(price is steep--but it might be about right given the vintage)

Best of luck to you!


1953 3600 Pickup
1946 Fleetline Aerosedan
1948 Hudson Commodore