best type alternator?

The stock round-back alternator in my 65 Newport keeps the battery charged and I have an EFI fuel pump and throttle-body injection. I have a 1-wire electronic Vreg. I don't know if the alternator is 35 A or a juiced 60 A type. A radiator electic fan is what really draws amps. For those with dim headlamps at idle, that is usually more a problem of wiring harness drops (corrosion) than the alternator, since they should light fine from battery alone. That said, I put a square-back w/ 2-wire Vreg in my 65 Dart.