Does anybody have a Vance and Hines SS2R slip-on or full system? What do you guys think of them. I'm looking for a good slip-on(kind of partial to V&H) but I don't want something that is so loud it is obnoxious. And if I would get an SS2R slip-on now, could I buy the header later on? Also, where is the cheapest place you guys have found them? Thanks