How to??
HP 273 was DP right?
I got a reman to use the Pertonix III cause my DP was not comparable. I wanted a stock appearing unit and was going to get one of the limiter plates FBO sells. Glad I did not, the reman had angled slots that will not work with that plate! It is designed for the electronic units Mopar offered with straight slots!
I printed a 360 degree template from the net and cut a hole to lay over the distributor. Put a piece of wire on the rotor to measure the advance to the template. Welded and filed the slots to what I needed. It is a little crude but got the advance to a degree of what I needed.
Only use 1 spring for quick advance.