This six-gauge set covers speed and rpm, fuel level, oil temp, water temp, and oil pressure. The big ones are 3 3/8 inches, and the package includes all the sending units and capillary tubes.

For instance, Classic Instruments offers part number CV64A, a ’64-’65 Chevelle package that includes a 140-mph speedometer; 8,000-rpm tachometer; and volt, fuel, oil pressure, and coolant temp ...