Yes I have an NOS driver's side quarter and NOS outer wheelhouse that I plan to put on my 1973 Chevelle. It needs a tail panel and trunk too, so I need the aftermarket trunk pieces, drop offs, and repair needs to happen to both inner wheelhouses. I do have the NOS tail panel too. I imagined that the order would be to remove tail panel, outer quarters, then all the trunk panels (while leaving the reinforcements that house the body mounts. Repair the stock stuff then install the trunk floor pieces, drop offs, outer wheelhouse quarter, then tail panel.. all while car is still on its wheels assembled. I would also leave the trunk lid bolted on undisturbed so it can be an alignment reference.