John, Thanks for reminding me. A neighbor/friend who is owns a machine shop had a micrometer at home and did the measurement for me tonight. The factory metal and new stamping is fairly close. The factory quarter (with paint removed) measured out at .035. The new sheet metal was .033.
I spent some time reassembling stuff on the car today. I had to elongate the quarter bumper mounting holes slightly for a better fit. And, I will have to do the same for the upper level chevron chrome mounting holes. The lower were drilled perfectly but they drilled the upper ones about 1/16 to 1/8 too low. Jim