I'm looking to get longtubes for my mach (I have an automatic also), which brands work, as of now i do not have a tubular k member but would be willing to get it for the clearance of the longtubes, but don't want to if I don't have to...
MAC's, Pacesetters and Hookers will work as will the the more expensive Kooks, ARH and Stainless Works. My choice would be MACs with a Lethal Performance X pipe.