Car or truck? If I'm not mistaken '49 car pumps were narrow belt but the trucks were still wide belt. For new pumps try Carpenter's. Or if you have cores send them to Skip Haney in Florida and have them rebuilt. Note: not sure if Skip is up and running after the hurricane. One other thought,
early Merc OCM car pumps were wide belts.
thanks to all.
I'll get new pumps from carpenter.
Maybe check with Michael Driskell at Third Gen Automotive. I like to support small business and he's a heck of a nice guy too.
Skip IS up and running, albeit a little behind.
Skip Haney - the best in my opinion