my 1969 charger with the 1971 up alt and reg was running rough well it had a stumble IT was the optima battery it was 4 years old IT would start it but did not have enough for the ignition. put in a new INTERSTATE battery problem solved.. I also put brand new grounds on both cly heads to fire wall . and cleaned all grounds my

IF YOU ARE NOT WRECKING STUFF YOU ARE NOT LEARNING !