How’s this for different? The FR500’s unique exhaust system begins in a traditional H-pipe, runs through two mufflers and into an X-pipe. That’s right, the X-pipe is after the mufflers. According to Ford Racing’s Hank Dertian, the benefits of the late X are two-fold: It better reduces noise and exhaust backpressure--the latter due to a reduction in bends to get exhaust routed around the complex independent rear suspension. The good news, as with most parts on the FR500, is the aftermarket company that created the system will be offering it for ’99-and-later Cobras, as well as developing new systems for pushrod 5.0s.