I have used Gary the TACHMAN at H & H Auto Electrical in Greer South Carolina 1-800-327-8716 .It looks like his website . Gary should be able to take care of all your needs on it.He is a good man and stands behind his work,which is the best in the business.
That looks like the tachman's website . In fact, the Dixco tach on the Ford page is one I sent him a couple of years ago. He rebuild it and silk-screened the Ford logo. It was the first one of those he'd done. He put it up on the website when he was finished.