dont mean to cut in, but I'll be after a 300cc kit soon, once I've saved my pennies, Are the barrel heads taller?? I thought it's just the bore that is bigger, or is it because HERMITT is using diffrent plugs/forks he has that issue?? And nothing to do with the kit, I thought it was bored stock heads and barrels, Oh, by the way, Where are TYGA, are they USA based?