I Was Looking At these The Other Day on there Site , So Crisper Throttle Response Over The Stock Reeds ? I Was Trying to Compare the Best Brand To Value For My Build , I Wanted to Get The Most Out Of My Mostly Stock Rebuild I'm Doing , I Have Already Fixed My Casting Flaws On My Exhaust Side And Also Have Started on the Polishing , Following KOR on you tube I Think my skills are up to par to Do Most any port and polish work on the Exhaust side