Here's looking at the L99 before we pull it apart for the Mast heads. The only visible deviations from stock are TTP's own carbon fiber air intake pipe, headers and Taylor plug wires. Not visible but from our first installment is a Mast Motorsports VVT Stage 1 cam package (cam, springs, ti retainers and cam phaser limiter). The Mast VVT (variable valve timing) Stage 1 camshaft features 0.573/0.588 lift and 220/234 at 0.050-lift duration with a lobe separation angle of 116-degrees. The cam package is designed to match the flow and power potential of their high-flow Black Label cylinder heads.