I have two Marzocchi XC500s. I haven't ridden either of them, but one has a 125mm steerer, a cracked crown and apparently functional, non-leaking lowers. The other has a 145mm steerer, an intact crown and leaking, non-functional lowers. 145mm is the right length for a size 18 Kona (1993 onwards). Obviously I could very easily make one functioning fork out of the two, but I don't actually have a need at present. I could sell the whole lot to you, or part of it with a swap. Please pm me if you're interested.