Only thing I've done is filled in the Ford ovals on the center caps (not all the pics reflect that fact though). The debate rages on about the issues associated with studs breaking because the bolt pattern is slightly different. I tighten all my lugs to 90 ft. lbs. religiously and have never had a problem with the studs breaking as has happened to some people (knock on wood). I did crossthread one once though and have to replace the stud, but that was completely my own fault.