Use a thermostat housing for a late model Chevy 6 or 8 cylinder engine with a threaded hole for an emission control sensor. It will monitor coolant temperature just as it leaves the cylinder head.
Jerry



"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!