I have enough detail on location, but am curious if you had any trouble drilling the hole? I have a Bronco shop manual that advises a 1.187" hole and location, but that puts the center point slightly on the downside slope of the fender...too bad it cant just be at the peak of the fender where there is less chance of screwing up the drilling of the hole. Any suggestions? I assume you found a way to safely drill that hole. I made the mistake of painting before installing the antennae!