http://www.pertronix.com/default.aspx
Here is their website:
http://www.pertronix.com/default.aspx
If you look in the catalog, you can find more information. Mine has a civilian distributor and they make a 12v kit for it. According to their literature, they can adapt to almost any distributor. There is a 24v kit for the military stock distributor, but I'm not sure yet about a 24v kit for my civilian distributor.
Quadratec in PA can sell you the kit for a good price, but you have to get Tech Support from Pertronix.
Hope this helps,