Man that thing gets it! Would you be will to show pics of your exhaust and header routing? Not many LS turbo cars with the exhaust exiting the rear of the vehicle.
You can start about page 3 of the build thread. I have almost 1K pictures of this thing, so please forgive me for not wanting to sift through them all.
You can check out my photobucket if you like. They are all on there as well.