I had them with on off-road h pipe and it was embarrassingly loud. Not even sounding good. I took it right off and put the stock mufflers back on. If it were on a stock h pipe it may sound good, but I didn't try that combo.
Thinking about ordering this and running it as a catback/intake/tune setup for this season. So far I'm extremely impressed with what I've been reading and half assed hearing online. The price is right and the sound appears great with a factory mid pipe. When the time comes for o/r mid and pulley I'd probably go to a stinger or something. I'll be watching this thread as I too am interested in picking it up.