I was mistaken,one all the crud was removed there is a top bushing .
I had bought a Cardone supposedly rebuilt distributor for 35 bucks...The advance/cam and shaft look like something made in India and it was sticking in the full advance position... but the distributor housing had a bushing top and bottom like Hot Rod Lincoln is talking about. I fitted the old GM guts into the Cardone housing and it's all good as new now...