I've got the Pype's O/R H with FRPP Stingers, but it was too loud for me and the trumpets were pretty bad (and I like loud too), so I had some resonators welded in along with every thing else which really gave it a nice deep tone all through out the RPM range.
Here's a couple of clips. It doesnt really portray the depth of the tone, but will give you a good idea.
WOW what a sound difference just the O/R H makes with the same mufflers!!!! I watched Tacobill's clips as well. Is it just me or did he spend alot of time seeing how much he could smoke the tires in 1st and 2nd?!?!?!?!?!? Let me see a run TRYING to get to 60 or so as fast as it can, not as smokey as it can.