I bought a Cardone rebuilt distributor for 30 bucks.The shaft and advance unit are a foreign made joke. But the housing has a bushing top and bottom unlike any stock distributor. I put a decent GM made shaft and advance unit in the housing...Better than new.
I believe "Bubba" has cut back on his work load and may not do certain types of work any longer.

70 Triumph 650 cc ECTA current record holder