RL02 drives with PDP-8 vs. PDP-11?

The thread on using two RL02 drives with OS8 made me think about this, but I didn't want to confuse that thread with my tangential topic. Is there any difference in RL02 drives and/or disk packs for PDP-8 systems vs. PDP-11 systems (other than the obviously different controller cards for OMNIBUS/UNIBUS/etc.)? If so, how do I evaluate and identify the specialized bits and pieces? I ask this because I have a few RL02 drives waiting for my PDP-11/44 project, as well as a pile of RL02 disk packs. If there are differences for PDP-8 vs. PDP-11 applications, i.e. due to different word sizes, then I'll need to keep my eyes open for mismatched parts in my pile. Conversely, if and when I get a PDP-8 system with an RL02 controller card, I'll wonder whether I can use any of the pieces I already have. I seem to recall reading in recent months about some DEC drive and/or disk pack that would have different hard sector notches or some such thing for PDP-8 vs. PDP-11 applications, but I don't recall which type of drive it was. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/