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We yanked off the stock 1.5:1 ratio rockers and bolted up a set of 1.7:1 shaft rockers from T&D (just like they use on the ORECA GTS-R that runs at Le Mans). This makes for a little more lift and duration, and is both stronger and easier than pulling the water pump and the front cover. The rocker swap literally took less than two hours and should be worth about 10 ponies. What's cool here, hence that Le Mans reference, is that when Herbert gets the courage to take apart his expensive Viper and bolt on an intake or revised cylinder heads, these will still be the rockers of choice.