I've been looking @ some dynomax thrush turbo exhaust setups. I'm wondering do they make their own kits, or, do the kits i see for purchase use their own piping and then dynomax mufflers? I want something with a unique sound, that's not to loud. I'm eventually going to get an o/r pipe and undecided on headers, i want a nice low sound. Are dynomaxs chambered or straight through, and do they make their own full kits themselves?