distributor

Should be two sets of points in it running against a 4 lobe cam, one set makes the contact and the other set breaks the contact to fire the coil, each set of points only did half the work so they were supposed to last twice as long. Parts are hard to get and expensive for them. There's really not much to be gained over a single point distributor once you factor in the cost of tune up parts. Go with the factory style electronic ignition, you'll be light years ahead.