Prestolite distributor issues

[68snewpy]

I'm building a mild 383 and plan to use the original '66 single point prestolite dizzy (it's all I have).  It's in good shape but the vacuum advance diaphragm leaks.  I assume finding a replacement will be tough so I'm considering removing it.  Any advice on doing this?  How do I secure the points plate?  What should I set the initial and/or total timing at? 
A little background info...
'66 383 (stock internals)
516 heads
Summit 488 lift cam
wiend single plane intake
Carter competition series 750 carb
Schumacher headers
3.73 rear gears

[signet]

hey there.

i would not do more than set the maximum advance.
34-38 degrees.

in the near future you are going to put an updated set-up in there right?

it would start easier and run better for a longer time even with a stock electronic set-up from a 400.

it sounds like it will be a fine engine anyways.

take care