The tachometer. Not the sending unit.What do you mean by "tach" ? Are you looking for the round can sender unit or are you looking for the RPM dial indicator in the instrument cluster ?
ok, thank you for the infoCheck with [email protected] If you have one that's not working, he specializes in restorations of 66-67 Charger gauges & gauge clusters. Also check on E Bay as gauge clusters do show up for sale from time to time.