This technologically advanced ''fluorescent display'' Digital dash will fit into your original instrument housing and connect to your ''OEM'' wiring harness. Full instrumentation, including a tachometer is featured, and, for extra cost, an optional clock can be built into your unit. An electronic transmission sensor operates the speedometer (included), and your exisiting fuel-tank sending unit will operate the fuel gauge. Excellent ! SPECIAL NOTE: Fits All Chevelles Including 300 & 300 Deluxe Series, Malibu, Station Wagon Models, And El Caminos.