Yea they come out, spray with blaster to loosen up, I had to pry on them,be careful if they're top hat looking thermostats, whoever makes them are proud of them.$80 on up I cleaned mine up, checked them in heated water on stove to see if they still work open at 140 and closed when cooled and they did.
PT-73
1973 32' FB Express
Chrysler 318's