Weeeeeeeeeellllll, if I actually had a machine shop I'd definitely make a set for ya! I had to get a local shop to make them up for me, cost around $200 for those parts and a couple other small brackets. I've got Autocad drawings of the parts though that I can give you for that purpose. Let me know what version of Autocad you or your machinist have. I could also PDF them if necessary. (IM me about that).

Reason I used the GSXR axle is that the GSXR axle has a threaded/flanged sleeve that goes on the left side instead of the nut like a Duc axle. To use the Duc axle you'd have to make a sleeve to fit the 25mm axle in the 30-32mm hole (can't remember exact dimension) in the fork bottom. And then I don't think the flange on the Duc axle nut is a large enough diameter to tighten the assembly down.

So what you get is an axle setup from a late-model GSXR (2003+ 1000, 2004+ 750/600) and you'll be good to go. Just remember to get a hex tool (24mm usually) to tighten that GSXR setup. Motion Pro makes one, Cycle Gear has them for about $15 I think.

Only mod you have to make to the GSXR axle assembly is machining down the threaded sleeve a bit to make room for the speedo drive.

Are you thinking of doing this on one of your Monsters or on that SS you picked up?