I hate to admit that I ordered a complete exhaust system for my 64. CC did not have a complete set and thus the issue described. The reason I ordered the complete set was to replace the side pipes on the 64; they were just too loud for an old helicopter pilot who can't hear squat. Indeed, I know that the side pipes are more desireable but so is the opportunity to either hear the radio or carry on a conversation with your passenger. Yes, I will keep the side pipes but for now, they must come off. Getting old is a b$%@h but it is far better than the other option.