Brett Jenkins

I bought a set of beru ignition wires from Roger, the screw on type. My plug side ends will screw on to them, but the distributor side ends aren't screw on, they have some wood screw type connection in them. What are the proper distributor side ends to get for these wires? I found a site that lists M3 screw on type for use on porsche, but i there are several and I am not sure which to use.