Can you tell me what you did here? Been wanting to do this with the comet for a while now, but I want it to look decent. That's awesome!
Those are OE Valve covers from the 87-93 Mustangs with the 5.0, I sanded them as smooth as I could and primed them, then re sanded with 400 grit and painted them black, using a PPG basecoat urethane, once that dried to the touch I added the decals, then clear coated them. They look pretty sharp on the engine, painted grabber blue BTW. The decals were from Callie-Graphics in Albuquerqeu. Her email is admin@callie-graphics.com tell her she just made Dave in Colo Springs these decals, she may be able to make them for you, excellent people to deal with.
