When installing my new crate motor (347 c.u.- using late model 302 block), into my '67 Mustang Coupe, I just could not make the engine mounts reach the frame mounts. Came up about 1/2" short. Turns out the 302 wasn't even available until '68. That is why you MUST have these '68 mounts if you're trying to install into a '67. These have one bolt hole drilled in a slightly different position, which changes the geometry of the entire mount, and mates perfectly to my stock 302 mounts. And I mean the fit is TIGHT. I had to drive the securing bolts through with a hammer.
Very glad to have WCCC and Don especially confirm my suspicions. They had a pair in stock and sent them out next day. They were rusted and dirty, but I don't care. They'll get blasted and powder coated and will look perfect when complete.