Step 1. David drilled a hole where the distributor stem would be positioned, and then drilled holes on the engine block where the spark plugs would be inserted. Make sure that you go all of the way through the plastic into the engine block, as this will allow you to position your distributor stem and plug wires at the right length. Take out the stem and the distributor casing from the DM 3204 wire distributor kit, and with the tip of the X-acto knife, clean out and open the hole slightly for the stem by spinning the knife around the hole.