Looks a lot like the Tanabe Hyper Medallion and my Sheepdog Prof Sport Exhaust.
I have a 3" TBE, and with the Sheepdog it's a quiet yet throaty idle, a smooth and almost exotic pitch on acceleration, and WOT it's fairly loud, the sound of the engine in car overtakes the exhaust note for me.
My friend that was driving next to me under a bridge said it sounded almost like a Lambo when I was WOT 1500-4k RPM haha