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After working with Stillen to find a solution to the AP Racing brake clearance, super-thin machined spacers were used to space out the caliper and voila, the GMC was up and running better than ever. Back at the test facility, we blasted new 0-60 mph and 1/4-mile times. Factory, our best time was 9.6 seconds to 60 mph and 17.76 at 88 mph in the quarter. With the Banks gear bolted on, we hit 60 mph in just 8.19 seconds, and hit the 1/4-mile marker at 16.7 seconds at 93 mph. Even with a worn-out, slipping clutch, bolt-ons do work!