Does it miss when up to running temp, or all the time? My coil went bad, and when they get hot they cut out. Ran fine when cold, but missed when hot. Also, check timing and vacuum for your vacuum advance on the distributor. You may want to check your plug wires also, I have had new ones that don't have the same resistance wire to wire...if wires have a big gap in resistance from one to the other, this will screw up your firing also. take an ohm meter and just see if each wire gives you the same reading, or close to it. If you get one with an out of wack reading compared to the rest, that would be a sign. There will be some difference in resistance because of the lengths, but not significant...very slight...see what happens.