I will have a BBK after-cat X-pipe for sale shortly. I'm going to full long tubes w/ the 3" off road x.
As for the sound...which is the only difference I noticed, I'll get a vid up on my youtube with my current exhaust setup. Cats are hollow, no mufflers, just the bbk x and stock resonators. The sound is SOOOOOO much cleaner and much much smoother than the H. That and the stock changes in piping size drove me nuts. To go from 2.75 down to whatever it is, 2.5 or 2.25, then back up to 2.75 is just plain DUMB! PM if anyone is interested in the x...$120 shipped is all I'm going to be asking for it.
...This Could Get Fun