Depends how hard you really drive the car. Because the oil will get really hot in the car & you have no cooling, I wouldn't be surprised if the car over heated in the summer (especially now that we've been having some 100+ days in the Northeast).
Even in the winter, it's still possible to overheat on a long road trip since (once again) there is no oil cooler. Your call though, but it's important to remember that even stock
cars were having overheating problems, so a tune certainly isn't going to help.
That chart is incredibly outdated for anything not-Vishnu & didn't help address the OP's question