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Those of you who read 5.0&SF regularly (shame on you if you don't-Ed.) are familiar with your tech editor's application of ATI ProCharger's [(913) 338-2886; www.procharger.com] race-specific F-1A supercharger to the Two-Valve engine in his wife's '02 Mustang GT-a project that had its challenges, especially keeping the serpentine belt intact when boost gets big. Those enthusiasts interested in bolting F-series ProChargers to their Three-Valve Mustangs now have an easier go at keeping a belt in place thanks to this badass Reverse Cog Race Kit for Three-Valves. The new system is highlighted by a 50mm (wide) cog drive and tensioner combination, and a stout, billet bracket that provides a solid, stable mounting structure for F-1 through F-2 self-contained blowers.