Probably not. Depends on the frame. there are minor changes between each succession in years. 81 to 83, things changed, then 84 to 86, so on. You would have to check the frame and mount points but I'm willing to say you are looking at a different frame, ergo, different floorboard mounts needed.
I own an 82 Aspencade, I had to get the boards for 81-83 GL1100.