I had it on my '04 for 3 weeks. My sound clip may be in that other thread... not sure. Personally, I didn't like it. It sounded awesome at WOT but since I'm a rather non-aggressive driver, I rarely heard it at WOT. Under normal driving conditions, it gives an exotic sound, similar to a Ferrari. I was looking for Nascar, which I achieved by having the resonators removed and glass pack muffler installed. I can't tell you about the ease of installation since I had a muffler shop put the Borla on for me. But he didn't mention any problems. Incidentally, I still have the Borla if you decide to go that route and want a great deal on a very slightly used system. PM me and let me know.
04 blk/blk M6 Yeah, it's stock. Stock LS6, that is ;)/Kooks coated LTs/Kooks midpipes/GMM ripshift/SLP Pulley/AMW catchcan/AZA Z1's 245/35/19 front, 275/30/19 rear/Toyo T1r's/BMR dragbags--and more :D/Built & tuned by Nick Williams/369rwhp-365rwtq