Dude dont get those cheap heavy crappy flowing turbo's. Theres 2 180 degree bends in 'em. And they are rolled not welded so you can blow them out. My cousin has done it. You want something quieter that wont kill perfromance get some Flow Delta 50's. Quiet at cruise but sound good when you get on it. Some say Flows kill performance but I dont get it since many drag, oval, and off road racers use 'em.
The Super Turbos flow better than the 50's.
... slight drone at about 2000-2400rpm