66cc big bore 225, 8019 springs (just checked at full spring pressure), BRAND NEW Ferrea valves, BRAND NEW Ti retainers and locks, BRAND NEW seals... ALL parts from AFR. Flat in all directions with machinist straight edge. Guide clearence measured and in spec. Springs freshly shimmed to .060 of coil bind for a .631/.617 cam. Heads located in Long Beach CA. Let me know if you have any questions.