I just ordered the Mallory spring kit from Summit. Dodgem posted the link a few posts ago. For $35, its worth a try.
Rick Ehrenberg from Mopar Action likes the use of a two stage timing curve. The instructions on the Mallory packaging show how to achieve this.
Maybe by Wednesday I'll be able to work on the spare distributor and get it in the car. I'll have to drive the car around to use up the high octane gas I have in it now. At 6-7 mpg, that shouldn't take too long!