RPM Gauge font on old Ford Mustang

A client says they need to match this font exactly. I didn't recognize it, then looked all through FontShop's latest big yellow book Sans section but couldn't match it. I suspect it was likely a privately commissioned typeface from Ford, but wanted to run it by the experts here to see if anyone could match it to a known available font before telling my client it would need to be hand-drawn. Or failing that, if anyone could suggest something very close, if it comes to that. Thanks.


Looks like Berthold Imago, but no cigar...