I agree I would like to see temps a bit higher again near the 170F range. Especially when outside temps start to drop aswell. So I will install a 180 thermostat again somewhere soon.

For the moment I'm happy with the cooler temp as the motor has a rusted thin coreplug at the rear. With lower temps the coolingsystem builds a little less pressure and along with the 7 lbs rad.cap it will hopefully save this plug a little longer till I'm ready for my planned overdrive tranmission swap.