The 60 or 90 amp Denso alternators that I use on my conversions can be installed with 2 wires but 3 is what is recommended. Charge wire, turn on wire and sense wire. If the car has been rewired and has a good harness then the turn on and the sense can both be connected to the same 12 volt source. I usually run wires to each so I do a 3 wire install.
I haven't looked in my Denso catalog but I would assume that there is an off the shelf Denso alternator which is internally regulated, high output and has a pulley for a serpentine belt. It sounds like that is what the OP wants. Once the OP finds an alternator he likes then he'll need to fabricate a bracket system to hold it in the correct location.
Here is the 90 amp Denso that I used on my '65 Coronet. This alternator came off of a Toyota Land Cruiser.