Not sure on an exact match as im only working from memory and the odd pic here and there but i think its close enough. Oh and i have just this moment finished painting it looking good
I have got the original pivot thingy if it helps to have pic's or dimensions etc to see if something can be made or if an old canti arm can be used in its place. I actually have another bike that also needs one so I do feel your pain as I need one also.