Answer some of the questions from above regarding the temperature readings using an infrared thermo gun. Point it at the rad, and the cylinder heads. What is that temp? Get within 6".
Do you still have the stock fans or replacements?
It is unlikely that you have a bad radiator or thermostat. Did the overflow tank actually puke? 210 is not overheating. Did you heat cycle the system and refill several times? The temp sender will go off scale high if it is dry.
These are cheap from any supplier:
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