MSD Ready To Run Distributor Buick Nailhead STBSB2LABK Ford 9 in Rear Plymouth GTX 70 71 Ford 9 in Rear This kit consists of two (2) each of thirty six (36) different jet sizes Does not require an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap A Dapts)Mechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearingMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeCNC machined billet aluminum housing and billet aluminum baseVacuum advance canister for improved economy (can be locked out)Easy to adjust mechanical advance with supplied springs and stop bushingsPowerful built in module produces a 7 HEI Style Terminal