My A/C works so I'm keeping it. These vans are sensitive to changes in aerodynamics, the tent and roof racks must be having a significant impact on your Hwy fuel economy. That and the added weight and your pushing the little 4-YE to its limit.
Yes Toyota OEM thermostat and radiator cap only...
New pushrods? Is that a preventative measure?
Oh I see. So the fan was not actually installed when it overheated? Some people wire electric fans to cool the radiator and ventilate the engine compartment after driving. Heat can accumulate int the engine compartment and cause difficulty starting...