So I'm a huge fan of the look and sound of dual exhaust. What I would like to do sometime in the near future is cut out most of the factory pipes from the cats on back and run pipes to dual mufflers. My durango is a 2002 5.9 r/t. I'm curious on recommendations of say H pipe, or X pipe. Will I see any performance gains (however marginal). Or would it be better to run the pipes to a single muffler then split out for dual tips? Also recommendations on what mufflers, I had dual flowmasters on the mustang I traded for this durango. Would I be better off with magnaflow, or something else?