I bought these off Craigslist. They are off a '89 FXR. Unfortunately they are blown and were dripping oil, when I un-packaged them. I sent pics to Works and they confirmed year and fitment. They said they could rebuild them with their current internal bladder set-up. Could be like $350 depending.
I haven't done it yet because I found a pair of Works Street Trackers for $80 that weren't blown and perform pretty well.