With the Shelby side stripes, should they be alligned with the rocker moulding or the bottom of the "C" scallop body line? (make sense?)
These two "lines" aren't paralell so whichever one it gets ligned up with, it will look crooked compared to the other.
:scratch:

(feel free to "draw" on the pic )

 

Line them with the rockers. That is how I have mine and IMO it looks the best.

 

Mine are actually in between. They slope downwards per the C-scoop, and upwards per the rocker panel. When the car sits level, they look like they're sloping up a tiny bit to the rear, but I plan on dropping the rear a tad also, so I hope they level out when I'm done. Installing them myself was not the easiest thing that I've done, and there was a fair amount of adult language, but I think mine turned out pretty good. I don't have pictures yet, but I'd suggest going to Graphics Express or Auto Trim Design to check out theirs, or the gallery here. Good luck, use plenty of fluid, and watch out for the wind. Once the vinyl sticks to itself, it stretches when you try to unstick it.