if its just a C6 kill him, stock for stock you will, dig or roll as long as you hook. Even if he has FULL exhaust I wouldnt worry, asuming you drive good and dont miss any gears. If your on stock or non sticky tires, I wouldnt try him from a dig..... BTW, whats done to the Shelby?
edit: this thread is old, so....... WHAT HAPPENED!!!!????