I have single tip GT500 mufflers on this 2014 5.0 car. Stock headers, lethal off-road H, lethal OAP with resonators welded in. I'd like to replace the mufflers I have now with something: 1. Little to no rasp 2. 4" or larger rolled tips 3. Can be louder, not quieter Does such a thing exist in the $300-600 range? Not gonna drop $800+ on a set of mufflers so borla and corsa are out.