Just got another one. This came from a '68 Cougar S code. Door tag was missing so I don't know what it was originally but it's a nice case and proper 2 hole configuration for a late car. Like Ed is saying the holes are located differently than the earlier single fitting housing, and while the fitting for the hose is the same (I think it may be 1/4" NPS thread) the bolt that secures the brake line is 3/8" - 24 NF.
I think if I wanted to fake one I would TIG up the existing hole and then drill and tap new holes in the proper locations / thread sizes.
Early Single fitting style shown for comparison sake.

Fittings:
