missing... you can't diagnose that unless the car is running. a miss could be a number of things... get an ignition that works properly first so you can for sure rule that out as the problem

and do you know for sure it is missing... cars with a big cam will do what they call camming and seem rough like they are missing. you can tell by pulling plug wires one at a time. if you pull one and the motor doesn't seem to change/ run rougher then it is missing. if you go through all of them and none of them changes the way the motor runs (ie looses RPM, idles rough) then it is probabally camming and may need a carb tune to help smooth it out at idle.