2013 Camaro zl1 auto with 5,000 miles, garage kept under a cover only used for car shows, and summer weekend driving. Has never seen rain. Car makes 620 horsepower on a mustang dyno and drivability is like factory. Some of the mods are C&C heads manley valve springs, and push rods. Custom grind cam with all supporting hard wear, upper and lower pulleys, id850 injectors, heat exchanger, larger coolant tank, airaid intake, American racing headers no cats stock mufflers. I have all the original parts that were changed. All the work was done by myself, and the workers at TuneTime performance located in Lake Wood, New Jersey. Regretfully selling it due to the fact that its taking up too much space in the garage. Need more space for the new car in the future. Any questions please call Nick at 973-886-3092.