Where can I get this part from or could I make one?

Brake booster check valve. Ford should still have it. If not aftermarket might have something you can make work but you will need to make up some vacuum line to get rid of that plastic garbage.

Ford probably sold the vacuum line and check valve as one whole assembly. You can try Rockauto.com or your local auto parts store as G A said. The check valve holds vacuum in the power brake booster so you still have full power assist at higher engine RPMs and if the engine stalls. Hope that helps! Jim

I’m thankful for the help. I know it’s a whole assembly so is there a different name for it?