DIS, Direct Ignition System Ignition Control 6015MSD body mounts and bushings 7 V8 1985 1988 exhaust straight pipe 7 V8 1985 1988 Chevrolet Monte Carlo 305 5 V8 1987 Chevrolet R10 350 5 88 8 V 1973 Chevrolet Camaro RS 4 8 V 1973 Chevrolet Caprice 4 8 V 1973 Chevrolet Chevelle 4 8 V 1973 1974 Chevrolet Corvette 4 8 V 1973 1975 Chevrolet El Camino 4 8 V 1973 1974 Chevrolet K10 Pickup 4 8 V 1973 1974 Chevrolet K20 Pickup 4 8 V 1973 1974 Chevrolet K20 Pickup U K 8 V 1973 1974 Chevrolet K20 Pickup 4 The DIS has advanced timing and rev limiter functions for racers such as individual cylinder timing One coil per cylinder means no moving parts in a distributor to control the timing and no cap and rotor to wear out