My dealer (the good one) just showed me a cooling system they put together for a government contract. I didn't have my camera, but I will try to remember it tomorrow when I stop by there. Toro Z master with ROPS Add a Plastic roof with support brackets over the entire seating area. Cut a 18" diameter hole in the plastic roof. Mount an electric radiator fan over the hole blowing down. mount a hibachi grill on the bottom of hole to keep your head and fingers out of the fan. attach radiator electric system to mower electric system. attach inline on/off switch Look cool because you are. I gave it a test. dropped air temp by 15 degrees.