Does the TA Alternator Have 1 or 2 Pulleys?

[challengermaniac]

I thought I read some where that the TA Alternator had a two pulley set up even though only one was ever used.  Is that correct, or is my memory fading?

Thanks   

[Chryco Psycho]

to my knowledge all new alt use the 2 groove pulleys as they fit anything but the single belt applications like T/A used a single groove pulley