hey guys. i got an 82 f-250 with a 351W. i was out driving about a year and a half ago and it suddenly died. its been sitting in my back yard since. i narrowed the problem down to it not getting spark. i replaced the distributor cap and rotor and the ignition coil, and just before it broke down i put new plugs and wires in it. i thought that it might be the petronics so i replaced it with a single points and condensor. nothing changed. the coil is only getting about 6 volts though. any ideas?