I bought a set of Valk boards and tried to fit them to my '05 Wing. The differences were too great for an easy install. If you have machining skills, it might work.
I would also think that if they could be altered in one direction through machining, they likely would NOT be able to be altered in the other direction.
I took my rear floorboards off my 1100 ACE Tourer, and put them on my Valk IS, needed to file the hole over a little. Reading, it seems they should have been interchangable, must have been cheaply made knock offs.
