Here you can see how much larger the AutoRad radiator is compared to one built to fit the factory core support. According to AutoRad, the unit offers 40 percent more surface area than a stock radiator and 20 percent more than most replacement radiators. Their radiators are handcrafted and 100 percent TIG welded from 0.090-inch aluminum. They are also vacuum brazed rather than epoxied. Inside are two rows of 1-inch cores, but if you have a big heat-generating engine, they offer 1.5-inch tubes for another $400.