Best part about loud exhausts. When you go through a tunnel and drop it down a gear or so. People cut a path around you unless they like loud confined obtrusive noises
. If you want really loud, just slap on a dual exhuast system and a set of single chambers. H-pipes actually soften the sound a bit. Anytime the system can share exhuast pulses then there are more pulses per second which tends to make things quieter. By just connecting a muffler and a pipe to the header (cast iron manifolds absorb some noise)and not synching the two, pairs the engine down into two four cylinders. thats why those damn fart cans are so annoying. Then again you could just make some zoomies and go for the ulitmate 1 cylinder effect. The only down side to this on a street car is the loss of cross-over removes some scavenging from the exhuast system. Which concidentaly is not needed on a Chevy according to the experts around here (my neck of the woods)
. The same guys who swear up and down that a 305 is a cam eater, but I digress.