I'll let it run for a little while and see if the voltage drops. If I do end up replacing the regulator I noticed there are several different models out there and some rated 42A some 63A and some that don't mention the rating. I'll have to check the altenator part number to make sure, but my guess is I need the high amp model since the car has AC. When I look regulators available from Classic Industries there are several options, just like the other link provided by Fbody69 for a NAPA part. Should I error on the heavy side to be safe and should the current harness match up?