PJ, Whats the low-down on the 30hp kohler and yammar diesel. From what I see on the website, the Yammar and the CAT diesels are two different engines. Just wondering, I have not hard anyone mention the smaller diesel. Also what would be the price on a Super Z with the XR-7 deck and either a 30hp Kohler or the Yammar Diesel. I did not see either of these in the new prices.