i was wondering if i should or shouldnt use stage 2 cams with my head.. i have dual valve springs it was ported and polished and retaners all that stuff and overside valves..

i saw this "Stage II: Stage II profiles are more aggressive than Stage I profiles, and are designed for modified engines operating at higher rev ranges. Upgrading to Skunk2 Racing valvetrain components is required for proper operation. Stock idle and emission characteristics may be slightly compromised, but fair-to-good driveability allows them to still be used on dual-purpose vehicles. Proper tuning, an upgraded intake system, and an exhaust system are required in order to maximize the potential of these camshafts. Do not use oversized valves."