Mopar performance alternator 1or 2 wire???

I have the later 71+ regulator. I dont need 110 amp either. The car has a green and blue field wire along with the main battery wire. I wanted this alternator because it was black but they only have the black 1 with 1 field wire. Just confused on why they show 2 field wires on it but only made to use on a 1 wire car.