If they aren't available any longer, which I doubt because MOW is great at doing what he can to help, I am currently modifying a pair that will be identical to the first pair I modified.
That looks like the right link to me. It'd be smart to get a pair of any of those versions from MOW at those prices and before it's too late. Now I'm thinking maybe I should hold on to my pair if these are going to be a hard to get commodity soon.