I seem to have difficulty finding a rear finish mower for my b5200e. It is rated at 13hp/ 11.5 PTO and most 48" mowers require 15hp minimum. I have found a new model that will work, but as it is rather pricey I'd prefer to buy used. My question is what are the ramifications of putting a 15hp mower on my kubota? Will it damage it? Will it perform? Any help is appreciated.