Check with dq, he found an aftermarket housing.
If you are looking for an original GM, the part no. is the same from 1955 through 1964 on all V8s and probably until Chevy went to the crossflow radiator. My part book ends at 64.
I looked at a 63 1/2 ton and a 64 3/4 ton, both 283s, and they had the aluminum straight forward housing too.
Ron