Hi Wayne and OCCOBRA,
How are things Wayne?
The fender arch is different on the rear fenders. The driver side has a higher peak in the curve/arch. While the passenger side has a better arch/curve which compliments and follows the tire shape. When I first bought the car I didn't notice it because I was "Cobra Drunk". I think when I get the coilovers on the rear then I can hide it by lowering the driver side a bit more than the passenger.
I guess you could say no 2 cars are a like. I would imagine they all have there imperfections. I also think once we start tinkering and changing things out, it's just comes with the territory. We as owners start to notice the imperfections along the way while striving to make our perfect dream car.
Sometimes I get OCD when I notice them. When the cobras on the road going 80 plus miles an hour and the sidepipes roaring..I tend to forget about all those imperfections.......... until the next clank or squeek.... Then it starts all over....