Car is popping occaisoinally from carbs, and from exhaust. Found about this after Timing belt, tensioner job and rebuilding leaky carbs. ASked owner if it was doing this before. Said reluctantly it was, of course he tells me this after fiddling with carbs for an hour trying to get it to idle smoothly. I have trouble getting car to idle at anything under 1,000 rpm. Figure its a points and or timing issue. Think the owner did these himself but he is a bit evasive on that question. Does this sound like a misadjusted points issue? Before I even take that appart, and does anyone know a USA source for the Electronic ignition conversion I heard about for this. And how much does that run.