I see what you mean, looking at the OEM part list I see there has been a change to just one mount hole/bolt for the 14' can. If KTM think is is good enough to have just one bolt then you should try to use one of the two holes in the older can to mount it. It may not be a perfect match on the sleeve over the header pipe and you might need to pack any gaps where the can mounts to the frame with washers or bushes , preferably rubber, as the mounting method on all years including yours have rubber isolation bushes. Best to just have a play around and see what works with what you have. If the existing hole position is just too far out to be practical, I would look at drilling new holes on the can mount tabs that will line up better. If needed you can extend the tabs a bit by welding a extra pieces in where you need the new holes. It is stainless but can be mig welded using mild steel if you have a mate with a mig welder. Let us know how it goes, great blog by the way, really enjoyed reading what you have done.