the parts selection sounds fine, it's been done a million times. what more can you tell about the missing? is there any popping from the carb or exhaust? first thing is double triple check everything you can on the outside. like the firing order around the cap, and that all the plug wires are pushed on correctly. what kind of distributor, stock points? if so, that would be my first suspicion. check to make sure the plugs are gapped right and one doesn't have the gap smashed shut. it's not hard to crack a plug during removal/install. a vacuum leak can cause a miss also. how much work was done just before this miss came to be? any friends in the area that are knowledgeable?