I agree. A few years ago I was invited to tour "Turnkey Engine Supply" in Oceanside, CA. They are builders of some pretty wild LS engines. Colby Unger, the owner, told me, when I noticed that his engines had stock appearing coil packs, that you should not waste your time on aftermarket packs at this time. He found numerous failures with one particular brand. I will not bad mouth them because they do make a very good ignition system for non coil on plug ignitions.