I'm currently in the market for a low hour, non leaking, very well running Kubota D600 3 cyl diesel. "B" series is preferred. I'm looking to put this d600 in an older style MD Walker. The unit has 5000+ hours on it, and currently leaks fuel, oil, smokes like crazy, doesnt always run on all 3 cylinders and also has bad blow-by. Its an old mower I took on as a project, seeing as how I have other MD's from the same era. Send me a message with the details of your engine for sale. Please include previous application, running condition and hours on it. I'm located in WI, and will travel or pay to have it shipped freight to my zip. I have been looking for a d600 for a few months, with not much luck. Thanks!