GM Off road Racing Exhaust

Has anybody installed the GM Off road racing exhaust on thier C6? I'm looking at them and would love to hear comment on them. Drone? How loud at cruising? Who makes them for GM? Are they compareable to any of the Corsa's as I'm very familiar with them. I can buy them very reasonble.

I didn't even know there was such a thing.

A good rule of thumb, when it says off road, it will be loud, noisy and you will have a ton of drone. It is not meant for the street at all. L88's had off road exaust that could be ordered with them. You can hear those running all the way across the fairgrounds in Carlisle. Now those were straight sidepipe setups and the C6 will be quieter, but it is going to be much louder. I have not heard of GM selling a off road kit, but you can figure that it will make a set of Corsa's sound stock.