We're stumped...Can Anyone ID this old steering box ???

Hey all,

Here are pics of the box and sector shaft we are trying to find the application for. We seem to think it's a gemmer box, but maybe not. The casting number we got off the box is #3386551 and the portion that mounts to the frame has a casting # of 2599. The diameter of the sector shaft where the seal rides is 1.25". We are in need of a sector shaft and seal if available, but would like to find the original application before I pass the hot rod down to the kids.

Any pointers to where we might find help would also be appreciated, thanks for your help.

Larry