So I now have 2 types of MARK 4 late 70's Mustangs. They are almost exactly the same except for the decal. I have 2 dark blue decals and 2 red decals. Can anyone explain the difference or was it just an opinion? I know the light blue decal is for my one with a G3 carby. But the dark blue and red both have G4 carbys and seem pretty much the same.
