Alternator suggestions?

Hey everybody I am looking to change my alternator to something a lot stronger to handle my charging problems. I have a 360 and am running a 72amp alternator out of a later a body and have power steering, 2 electric fans, a stereo system including an amp, and an electric fuel pump. Currently as long as the car is moving along I am getting about 14 volts charging but as soon as I am at idle and the second electric fan kicks on I am barely at 12 volts and the more and more the car idles, it will eventually go to a little under 12 volts. I personally do not like the external voltage regulator but if I could find an externally regulated alternator that would handle the load at idle I would go for it but fear I might have to go with a newer modern internally regulated one. Anyone have a similar experience and found a solution?
Thanks for the help