1965 Prestolite D.P. Vacuum advance diaphragm.

The prestolite dist is completely different than the Chrysler dist. So if it's not SPECIFICALLY for the prestolite Dual point it probably won't work

Btw you can run it with our vac advance it might not be as crisp off the line etc but will run.

Follow the FSM instructions for gaping the points.yhey can be a bit challenging.

I cleaned up a DP for my 67 273 and it ran great. I had to replace the ground strap but my repair failed almost leaving me stranded.