Well there I go again, not paying close enough attention - duh!

Golfball's truck is a '54, which makes my input above not applicable for his truck.

A recheck of the
1929-57 Chevrolet Master Parts Catalog shows that the correct 3 speed shifter handle for his truck is GM# 3723916 which fits 1953-54 3 speed equipped Chevy Passenger cars (not Powerglide) and 1954-56 3 speed equipped Chevy Commercial Trucks.
So a different set of possible donor vehicles, but still should be easier to find than a truck specific shifter.
Sorry for the misleading original info.
