All pro's man, only thing i feel is a con, was the double shipping charge b/c it is in 2 pieces, so it was hard to ship i guess. I picked mine up at NIppon Power.com, like 550 shipped. Sounds so nice, really really low key, but loud when you need it to be. Def. got deeper and more raspy with my header and high flow cat. Great design, here are some pics....
here
here