Well like has been said already it all depends on the quality of the gauges and senders. I still have an old set of Stewart Warner mechanical gauges from 1977 in my Savoy and I trust them and maybe that's why I still have them in the last 6 cars I've owned.
If I were going replace them it would be VDO gauges senders twocents
Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60