did a search found nothing, i run them in my cobalt SS/SC, and they are the best plug out there right now for the cobalt from what ive been told, the guy who tunes my car told me ZEX is the only plug hes ever been able to give 20 degrees of timing with no knock on pump gas. the plugs are advertised as a turbo/supercharger/ nitrous plug, has any one used them in thier LT1? i spray a 300 shot of nitrous and im running NGK's but ive been blowing out spark even with having a malory ignition box! i called ZEX about them last week and they said that they have them for the LT1. has anyone tried them?