they will come out even if you mask it correctly /forums/images/icons/wink.gif. I've seen it done and it does not look right at all in my opinion. The dual stripes look best if you stick to the Shelby Formula ... anything more than the standard distance between the stripes looks wrong. Goes for non tappered stripes and too wide/too skinny stripes as well.
In 1968 it was the only way you could buy a Mustang with two-tone paint . Stripe went from pinch weld ( car was painted before windshield was installed ) to the turn signal louvers , but not the louvers themselves .In `67 it was the tail light panel that was the other color .