DeeVeeEight
Fast Pedalphile
OK, so I agree that the DUI is excellent, but then so is the stock HEI. And they are practically bulletproof.
Did you ever find a reason for your dizzy blowing apart? It's something you might want to look for before just dropping another one in place. Won't cost you anything to look! Good luck.
One of the counterweight arms on the centrifugal advance came off. The pin holding it in place was in the bottom of the distributor and I haven't found the spring. The other arm wedged itself into the linkage between the rotor. The imbalance caused it to shear the top off the distributor just under the rotor. The bottom end of the dizzy looks and feels fine.
I went ahead and ordered a new MSD 8365 Distributor with internal coil and rev limiter from summit today. I'll pull #1 spark plug and set the motor to TDC, pull the old dizzy and install the new one, then keep my fingers crossed.