I have a friend with a Chevrolet that runs 5:97 My barracuda runs 6:03 I have came up from 13 to 1 compression to just over 14 to 1 also I have changed my 4:56 rear gears to 5:13 both cars have power glide transmission both cars weigh with in 50 pounds of each other. He is not changing anything. Have I done enough to get around him? I have already lost two cases of beer to him.