It isn't an add. It is the Land Pride website and they are owned by Kubota I believe. They have a feature for Kubota Matched so if you select it, it will show you the attachments that are available for your series tractor. Also when you select any attachment on their website it shows on the top tool bar what tractor series it is matched for. So SCG 15 series says they are matched for M series not MX, and SGC 10s are matched with MX and L series. I understand what you are saying about the horse power, though I didn't see any fine details where it says that. Is it printed somewhere? My concern here is weight 15 series are almost 900 lbs and the lift capacity of the loader on the MX is only 2300. So I will be using up a significant percentage of my lift with the 15 series. (And none are available either)