New guy here ... I have a 715 engine with 28K miles on it and is spotless ... I am knowledgeable about engines and ignitions having built several for myself and others ... However, the distributor with the attached cavity and sealed wires are different ... I had to buy a 24 volt coil but what I think is the coil wire has no end that fits in the coil which has a strange to me connection ... what is the cylindrical void for ... I assume the other wire is a ground for the points ... I am going to put it in a CJ street rod on an S-10 chassis ... what are the vacuum lines going into the void for ... It is a bit different and I could use some help and maybe a visual image ... Thanks