I've never had a high flow thermostat. I always thought you "made" those. Lol. I'm almost ready to get a set of CVF racing pulleys. Mine are so mis matched, the alt belt always ends up being some crap " utility " type..so if I end up getting those, I may overdrive the wp. I have 66 ac one on there now, rubs the crank. But keeps her cool. I doubt it's the flex fan
