Mixing new technology with a great motor and giving you all the extra HP you can get. This setup is great for solid lifter cams. Gives you the opportunity to run a more aggressive cam profile and still keep your drive ability. These are high quality T&D needle bearing rockers with custom designed rocker stantions by The Wedge Shop. They are a direct bolt on, but do require different valve covers (Offenhauser's), because of height clearances.