a 5.3-6.0 exhaust? does a 6.0 flow more? what would be any sound difference if any?

 

The 6.0 exhaust is dual to the muffler if I'm not mistaken. I think they sound about the same; the 6.0 might be a little louder but that might have something to do with the motor. It would be easier to do a true dual on though; just cut it off at the muffler and put 2 single in/out mufflers on it and get some tailpipes or turndowns on it. I think they flow about the same though.