These pictures are of the installation of the GMMG Chambered Exhaust on my 2000 SS.

The exhaust installs using existing factory hangers.

The only alteration to the car required for the new exhaust was bending the heat shield a bit. I took the heat shield off and carefully flattened a spot on it with a hammer using a piece of 2X4 as an anvil. The area that was bent can be seen in this picture just above the pipe where it curves down at the hanger.

The GMMG system comes with a quality saddle clamp for the intermediate to rear section connection. However to make the new system easily removable and/or adjustable I used a 3 inch stainless band clamp instead. I cut two 1 and 1/4 inch slots 180 degrees apart in the swedged part to allow the band clamp to mash the outer pipe onto the inner one and make a tight, leak-proof connection. Polished stainless band clamps are much better looking than saddle clamps too.

This is a picture of the intermediate pipe running forward from in front of the rear axle. You can just see the band clamp between the sway bar and the rear housing.