The Ultimate HEI Kit has everything you need to make your early model GM HEI Distributor a great performance distributor! The MSD HEI Module features special circuitry that produces 50% higher coil drive currents than a stock module resulting in higher spark energy at racing rpm. By matching the Coil specifications with the module, MSD also delivers more accurate timing and dwell control. To ensure all of this new power makes it to the plugs, the kit is supplied with a high quality rotor and a durable cap with brass terminals for superior conductivity. Even a new dust cover to top it all off is supplied. Don't mess around with stock appearing ignition modules and cheap overseas models. The MSD Ultimate HEI Kit delivers proven performance! Application: 1973-1980 Buick 350 (5.7l) V8 1975-1975 Buick 400 (6.6l) V8 1973-1975 Buick 455 (7.5l) V8 1977-1979 Cadillac 425 (7.0l) V8 1973-1974 Cadillac 472 (7.7l) V8 1973-1976 Cadillac 500 (8.2l) V8 1975-1976 Chevy 262 (4.3l) V8 1979-1980 Chevy 267 (4.7l) V8 1976-1980 Chevy 305 (5.0l) V8 1973-1973 Chevy 307 (5.0l) V8 1973-1980 Chevy 350 (5.7l) V8 1973-1980 Chevy 400 (6.6l) V8 1973-1980 Chevy 454 (7.4l) V8 1975-1980 Oldsmobile 260 (4.3l) V8 1980-1980 Oldsmobile 307 (5.0l) V8 1973-1980 Oldsmobile 350 (5.7l) V8 1975-1975 Oldsmobile 400 (6.6l) V8 1977-1979 Oldsmobile 403 (6.6l) V8 1973-1976 Oldsmobile 455 (7.5l) V8 1977-1980 Pontiac 301 (4.9l) V8 1973-1977 Pontiac 350 (5.7l) V8 1973-1979 Pontiac 400 (6.6l) V8 1973-1976 Pontiac 455 (7.5l) V8