Danny-you can try the modern day ash ring and catcher but unless the slots in your leg sockets align, it wont fit the MT and you would have to use hose clamps to attach. MTs have the ash ring that clips onto a steel bar that was secured to the kettle by the old style ash sweeper (large bottom hex nut which is still available almost everywhere). Weber does not make these steel bars anymore. I can snap some pics of the parts if you would like a visual and will also check if I have any extras.
As for the legs, get them at Weber. A leg kit is around $22 and if you use HOLIDAYBBQ2012 you get free shipping (worked for me yesterday). For polishing the legs and dampers, use Mothers Mag polish....works great.