AFCO/Dynatech
The market for taking the Shelby GT 500 beyond its already potent beginnings seems as strong as ever. As it did for the Terminator Cobras, AFCO [www.afcoracing.com] now offers a direct-replacement, double-pass heat exchanger ($389) for the GT 500, which reportedly improves upon the cooling area of the stock HE by a whopping 300 percent. Likewise, AFCO’s sister company, Dynatech now offers a stainless steel header system ($1,795) for the GT 500. It includes 1 7/8-inch long-tube headers and a 3-inch X-shape crossover with Power Cats. They promise gains up to 45 hp with the system.