need some help. since my baffles in the ole mufflers seem to be coming loose, thought i'd just get a di/do muffler. to those who have this, how does it sound. now i already got 2 hi flow cats. will a di/do muffler sound the same as my 2 si/so mufflers. i currently have spintechs on there now. will a di/do maganaflow be too quiet even with hi flow cats? if not magnaflow, which di/do muffler should i get.