I just had my exhaust done, used two moroso spiral flows 2.5" in and out and 2.5" custom bent pipes all the way back, with an xpipe infront of the morosos and an H balance behind, sounds super smooth, really smooth, I have a video but its all garbled up cuz my phone has a crappy mike lol but its the closest sound i've heard come out of an ls to the g35 and 350zs cuz thats the sound I wanted too lol