AccuSpark 25D Electronic Ignition Distributor - Complete (Top Entry Cap) - This is a fully electronic replacement for the original Lucas 25D and DM2 distributor. It has solid state internals and does away with the points, rotor arm etc for superior reliability. You will also require the uprated Lucas 'Sport' ignition coil (part no. VAC103LS) and the vehicle must be running NEGATIVE EARTH.