There are a number of threads on thermostats. The modern style ones install in the radiator hose at the outlet of the heads. You have to come up with a way to retain them or they will flip inside the hoses. A second clamp above the thermostat is an easy way to do it. You can also install a tube inside the hose above them, etc.
https://www.fordbarn.com/forum/showt...t=thermostates
https://www.fordbarn.com/forum/showt...t=thermostates