shift bracket on a early 80's chev 350 block engine

[mrmike911]

While swaping out an engine an important part went missing. It is the bracket that holds the Shift bracket and reverse valve lock in place. It's for a V*. I did manage to find one for a four cylinder and hoped it would fit.. no luck there.
Where can a guy get this part?
I found a diagram it is labled #52 So far the Bone yards in Vancouver BC have come up dry.

http://www.boats.net/parts/search/M...IFT BRACKET AND REVERSE LOCK VALVE/parts.html