I had a '50 Ford dash in my old 34 Ford coupe but didn't get a clock with it. I found a "Westach" (I think) tachometer that fit perfectly and slid in from the back of the dash. I bought mine in Michigan from IONA Speed Shop. If I remember correctly the owner is Dan but it was his son I talked to. He had a patina blue '48 Ford pickup and I think his Dad was in all the magazines a few years ago with his deuce roadster - One of their claim to fame deals is they bell mouth all the holes in their frames - I'm sure others will remember these guys but you can probably find them on line.
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My wife wants me to see things from a woman's point of view, so now I spend a lot of time looking out the kitchen window