hello I'm joe from ohio retired firefighter. to be honest I've had nothing but classic mustangs and newer gt500's. I've sold my last mustang and decided to get a z06. I've found a one owner completely stock 2007 z06 with 37,000 miles on it. I just have one question do I really need to be concerned with the head issue on these cars? I don't plan to mod it or race it just a weekend fun driver.