when I first bought my car (late 09C) in 1976, I had several people to tell me that the 'side mount battery is wrong for the car'.. and encouraged me to put in a topmount battery and change the cables... I later learned the real story, and was glad I never followed their advice, but I'm sure the same thing happened to many other late build camaros during that period! so maybe yours was one of them X77??