I have been thinking about getting a race header, either FC or FS, but want to try and retain emissions? I was thinking about the race header->aftermarket flexpipe w/FC cat welded in->MBRP catback. Would that work? What is everybody's suggestions? I would like to know soon, as I just purchased the MBRP, and if I am going to do that, I might just order the other stuff and install it all at once.