Blew the piston and ruined the cylinder, etc. on my '07. Have access to a head and cylinder from a Raptor but the rhino has a housing on the head that looks like it houses a thermastat that the raptor does not have. The raptor has an inline thermastat near the radiator. Pulled the rhino housing apart thinking there would be a thermastat inside but there was not one. Has anyone else taken a look inside the housing? The parts books even calls it a Thermastat Housing. No part number or any trace of a thermastat for the rhino. Does it just not come with one? Do they not put one in that goes to the southwestern or western states and put one in in the northern states, etc? One local mechanic says it does not have one and the other says he thinks it does. Any ideas?