Just put the 40 series flowmaster on with 2.5" tips. Got a shop here in town that custom makes the pipes, supplies the tips, and muffler. Cost me $246 with labor. That did a bang up job. Looked at the kits but they were $400 plus. It gives a sweet rumble and nice tone and aggressiveness when accelerating. I have heard people say the 40 series is too loud, but I have to disagree. I think it is just right. Drive safe.
David