That was a duel point distributor with mechanical advance. You do need to change the distributor. Probably the only way you would find one is contact some of the older speed shops to see if they still have one sitting on the shelf or look for a used one. There are other better choices too like a DS I or II, Classic Inlines HEI system, both of those are electronic, or as a bare minimum you would need a 68 up point distributor. Good luck on the project