Running without a thermostat ok?

mguner said
I found this on CJ pony parts.... 1.5" od
http://www.cjponyparts.com/lower-radiator-hose-spring-stainless-steel-small-block-1965-1973/p/HW769/

Oh, I've got to roll my own? (pun intended)
But that cost extra.
I've been gypped.