Crank Pulley Question (AC / OBA)

[JMark]

Managed to get everything figured out with my OBA setup and installed nicely, but am running into one problem, looks like the third pulley that goes to the front of the existing 2 is bad (not in true)

Is there a 2 groove pulley that bolts to the vibration damper?
if not, do I just install a second pulley identical to the other, if so, how do i keep them aligned so there aren't any vibration issues. The outer pulley goes to the alternator.

 

[Bent]

I think most crank pulleys are two groove. The 1987 to 1990 YJs used v-belts also and it seems like AC was more common on those.

 

[CJim7]

I remember having the same issue when I installed the York on my 401. I had to locate a two-groove pulley. They're out there, it's just finding them...