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The main thrust of the top end freshening was to achieve a stout street motor that exhibited a good amount of torque throughout the engine's low and midrange while still maintaining a good idle. It was with this in mind that Barkley chose to use a COMP Cams No. K12-234-2 Cam kit. The K12-234-2 is a perfect example of parts that are designed to work in concert with each other and consists of an Extreme Energy hydraulic flat tappet camshaft, a No. 2100 Magnum timing set, a No. 981-16 single-spring (1.230 inches) valvespring set, a set of 742-16 spring retainers, locks, and seals (about $350 retail). By the way, Barkley says it's always preferable to use a cam installation tool (like his Powerhouse No. 101045) so you don't damage the cam bearings during installation.