It is going into a 67 Barracuda Formula S convertible, 318 (plain Jane - PO blew up the 273 and inserted a 318) automatic, no AC. Nice daily driver ( I hope). No big stereo or additional lights.
IMO there is no real advantage to converting to the '70 up alternator wiring.
You can buy a stock looking regulator with either electromechanical or transistorized internals.
