Your car "probably" has the round back alternator with the single field. I would recommend going to the later (1970 I THINK?) square back dual field alternator. I think these guys will agree with that. Just know that with the dual field, the one small wire from the old alternator will attack to one field (doesn't matter which) and theo other field gets grounded. I made this upgrade on my 64 and it charges better and more stable. But be advised, don't go "crazy" with the alternator amperage. I wouldn't recommend going any father than maybe a 50 amp unit. I think mine is like a 37? I cannot remember. It's been awhile ago. But they will probably try to give you a 60 or 70 amp unit. Don't do "THAT".