I agree......my AMD quarters all had a tab that slid under the drip rail. I was able to get it seperated for removal by drilling the spot weld that held the drip rail, then finding the spot weld that held the quarter panel "tab" to the inner structure. Installation was very difficult to get it slid under and in all at the same time. Not sure it was worth the time and effort. I learned all of this by disecting a 68 GTX I parted. I should take some pictures of that area as I think it has perplexed more than one person. I kept the pieces for reference. When I get back to Iowa I will take some pics. Alternatives I have seen used are to remove the drip rail, cut the drip rail where the stainless clips on and bend it downward after drilling or grinding the 3" or 4" Dave describes, or cut as Dave describes above.