The ignition kit is SUITABLE ONLY for POSITIVE EARTH CARS. Not suitable cars with electronic rev counters. Suitable for all 4 cyl cars fitted with a 23d 25D or DM2 Distributor Lucas Distributors are stamped with the Model number near the Vacuum, DM2 or 25D. Foe example, MG, Triumph, Morris, Hillman, Reliant, Landrover, Ford, Singer, etc etc. Comes Matched with our AccuSpark red coil. Accu Spark Red High Power 3ohm Sports COIL Suitable For all 12 volt ignition systems with Push in HT connections. Ideal for use with points or our electronic ignition kits. Accu SparkT electronic ignition module. ...