I am going to be picking up a Bassani BX system next saturday and I'd like to know which mufflers come with it. Is it the Quiet Thunder or the Street Competition? None of the places that sell the system are ever specific about which it is. I have seen mostly Quiet Thunder setups and was wondering if anybody sells the SC. If not, how loud is the Quiet Thunder? I want it to be loud as hell but I still want to be on speaking terms with my neighbors.