Re: Dwell Meter?
Both dwell meter that is powered by the battery (positive, negative and sensor wires in place), and a conventional timing light (as you already have) work just fine for your ignition system. There are some dwell meters from the early days that only have two wires, a ground and one to the various inputs, like coil negative for dwell, that should not be used, The ones that use the battery power are what you want, and they also work on later electronic ignition systems.
Caution, you do not have a feed back ignition system, as used on computerized EFI systems, so, you DO NOT WANT, NOR NEED A DIAL BACK TIMING LIGHT. Feed back systems use a bit of timing lag in milli-seconds (computation time) to calculate, then deliver timing signals, and the dial back works to return correct timing on those feed back systems only, A regular, non-feed back system has no lag, so, they do not need the computation fix of the dial back. Feed back light on conventional systems makes for incorrect timing when used with dial back functioning. As far as I know, 45 years of it, there are NO dial back lights that work with a conventional ignition system, only computerized feed back spark curve systems.
Points are tungsten coated (not Iridium), to help slow down point face burning, metal transfer. When theya re filed/sanded, the tungsten is worn off the faces, and burning/pitting occurs faster. If they're burnt, or have pits, replace 'em. Most common cause of points pitting is oil vapor getting between the points, condenser and point plate, and the ground wire to the vacuum advance from the points plate. This creates increased resistance, and loading of the points, causes them to burn their faces.