Frank everything is relative, when the body moves forward the nose has to be bridged to the radiator support more, you gain clearance for wipers at the back of the hood, the roll bar clearance gets tighter. Every decision is reflected in other areas. You could analyze it forever. Many of us find that the two sides don't match up. I couldn't measure much variation in the frame, it is very square. The body, not so much... just keep playing with it until you are satisfied. I couldn't get it "perfect"