Get the Kooks 3" x 3" GREEN w/Cats Stainless Steel X-Pipe for your 2006-2013 Z06/ZR1 LS9/LS7 6.2L/7.0L.
The EPA approved Ultra High Performance "GREEN" Catalytic Convertors are a performance upgrade. Standard catalytic convertors are rated for up to 600 horsepower, whie the "GREENCats" are rated to 900 horsepower.
*These products are NOT legal for sale, installation, or use on a licensed vehicle in the state of California, and they do NOT meet CARB compliance