Working on electronic ignition conversion for HP273 dual point distributors

Stunning service bulletin halifaxhops! I'm still wondering about that one. Maybe just the thinnest layer spread with my pinky finger?

I struck out this time with Napa, but I have ordered the correct vacuum advance for this distributor from Mancini Racing;

Mancini Racing Distributor Vacuum Advance Canister

There were a couple NOS ones for over $100.00 and a used one for $25.00 on the web, but how long would thier 50 year old diaphragms hold up?

The Mancini ones are new manufactured and said to be just like original for $85.99 + shipping. In stock, and will ship today too!

I may have the job done by Memorial day yet! If not, I think I can always drive limply down the road with a the bad advance, as it was before :(