I see no reason it wont fit the years that have a 4 inch intake boot/airbox hole size.....Atv's 3 wheelers etc. just not dirtbikes>no room for it.

Westtex your correct about the placement of the filter itself im sure. That all sounds like great info. The 2 ends are the same size......
The mount im working on, goes to the frame tabs on the 91-92 under the seat.

I currently cannot know if the frame tabs are similar.........The mount is specific to the 91-92 but the airbox could fit anything.