Just did one and have a 68 here to copy hole spacing . The windshield will have to be removed. The measurements for the screws, Depth , Spacing I can get off of the car that is here if you need that. We used a spring center punch and drilled the holes small. We let the screws have something to bite. Windshield and rubber were removed on Todds car. I believe 3/32 drill bit . mThen used old srews to open them up. The Screws for final fastening should have sealer on the threads
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