It may be completely unfounded but I don't trust aftermarket ignition conversion kits. All my old stuff with points always started in winter and ran just fine as long as I gave them a little attention once in a while. What I like to do is to put a new set of points and condenser in in the spring and put the old ones in the glovebox just in case (although I've never needed them). Check the dwell at oil changes (it almost never needs adjusting) and put in a new set next year. If you do need to use the old set it's already pretty well adjusted and should work if you need them. One thing about points is that they usually give you warning signs that they need attention. Electronic ignition just quits.