R160 Head Count

How many R160 trains (not cars, trains) are currently running in full time service on the N line? How many of those are R160Bs, how many are R160A-2s, and how many are R160A-1s (I doubt if there are any of these, but this is a strange world)?

Have any R160s creeped over to the Q line, or any other lines besides the N?

I'm going to New York this weekend and I don't wanna be surprised, so that's why I'm asking these questions.