Dual point distributor question

Without measuring it you are guessing. There's a procedure in the shop manual. I don't even remember, anymore, what the spec is. Of course you will move the points. The question is, "how much?" You can get a better idea by running it and checking the dwell, and better yet by looking at it with a scope. You don't HAVE to have an ignition scope you can view the primary pattern with almost any capable test oscilloscope