I'm from Riverton, WY. Welcome to the forum
You might talk to Terry at Terry's Auto Salvage in Casper. Take the Beverly exit to the north, from the "freeway". Drive one block north after the exit and turn right and drive a block. His building is on the south side. Terry has a bunch of Mustangs and Fords in his lots. I've bought many parts from him. He's gruff and to the point, but is honest. He may be able to point you in the right direction and keep business local for you.
BTW; a very good friend of mine has a 67 390 FB. He may be able to help you with some parts. He's had his car since high school, a long time ago....getting ready to restore it.
