I'm against "one wire" lashups for street use, and you'll find that there are no vehicles (that I know of) that routinely use a so called "one wire" alternator.

The 10/12 SI siries work just fine. If you don't want to run a separate sense wire, they ae easy to hook up. There's "no1" and "no2" on the regulator plug. Just jumper no2 to the battery stud on the alternator, then hook no1 to a keyed ignitions source through a diode.