I've tried to find some plugs (AC-WR41N or equivalent interchange) the last few days - no luck. Even called AC Delco directly - they say the plug must have been obsolete for at least 20 years, since they don't recognize the number, even though it is theirs. None of the cross-reference guides I checked (Autolite, Bosch, NGK) list this plug at all. I just broke down and ordered a set, along with cap, rotor, points and condensor, today. I had really hoped to find something local, now. Oh, well. If someone posts up the part numbers tonight, I will just pick up another set (if I can get them same or next-day). Can't wait to get this thing running like it's supposed to.