I also got this, together with 996 GT3 Crankshaft, 996 GT3 Oil Pump, but I would like to use these parts for the build of the Step 2. For what kind of application are indicated the mechanical rocker arms? Until how many rpm? I saw the peuteur rods and rocker, no idea how much they would cost, plus valve springs and valves, no idea, it is strange only prices of used parts and bran new mahle parts are available...