I had true duals installed by Justin Sutton yesterday!!!
All I can say is awesome!!! It sounds better than any exhaust I've heard on a LS1! Justin did an amazing job on it. It fits perfect and has plenty of ground clearance. I can't say enough about how good of a job he did. He is a really nice guy. I'd recommend him to anybody. He really knows what he's doing. There's pics in the link below.