I know this is the same old lifelong question. I cant find a good quality sound or video clip of a MAC or Flow catback on a 99up GT without cats. I'm going to get a prochamber for my 2000 GT, but dont know what to do for the catback. I love flows, but am not so sure about flows on a modular motor. I hated the two 5.0's taht i had with MAC. I know everyone has their own opinions, but any feedback will be appreiated. Thanks Guys.