Hi, I have made parts for the #348 Hi Lo and now learned that there was a #467 Hi Lo. I am told that the 467 was for large frame tractors. I see from the operator manuals that all the parts are the same, only the 467 has an added shift support. I'd like to see some discussion on the HiLo units. I would also like to know if anybody can tell me the dimensions for the 'special nuts" 157365 and 157366. Those wear and I can make them but have no dimensions (size square, thickness and thread) Maybe everyone here has all the parts they need already.