To my knowledge Koyker fabricates mounts when a dealer (or someone) provides them a tractor to work from and they are convinced there will be enough sales to justify development. I don't believe anyone has ever provided them with a 336, or that it would matter as the number of them around is likely very small. I have been involved in marketing used compact tractors for over 13 years, and have focused on Yanmars for nearly 10...and I have never had a 336 on the lot, nor, for that matter, ever actually seen one up close and in person. It is, by all accounts, a fantastic tractor....I just think there aren't enough of them to justify development of model-specific mounts.