Systems like Corsa embrace the sound of the Coyote, which is higher pitched and raspier than traditional V8 muscle cars. Other systems (typically with H pipes) suppress some of the rasp and high notes to try and get closer to old school sound. It sounds like the ones you mentioned in your OP are what you are after, but I haven't heard any of them with headers. In person I have heard Corsa Extremes, Borla Atak, and Roush catback all with LT. They're all very loud but the Borla Atak IMO has the best tone of the three.Yeah it’s tough. So many sound so good. Now I’m even more confused because the comments here have made me go back and listen to the corsa and man, the extreme with lt and no cats sounds menacing. I’m after that extreme loud and traditional v8 muscle sound.