The car is now fully stiped and ready for bodywork. I ended up deciding I would much rather just remove the old paint to make 100% that there would be no contamination or problems, then that exposed a large problem... both the passenger and driver quarters that I had thought were straight turned out to be covered in accident damage that was partially repaired and some rust on the driver side both were covered in about 1/2 an inch of Bondo. I did not get any picture of the driverside before I started repairs, I tried my hand at doing the metalwork but as never doing it before and because of the amount of damage it was not made better, so I decided to just replace the quarter and it was not as hard as I expected. The AMD panel fit like a glove and required almost no trimming to fit.
Here it is with the quarter removed, with the correct spot weld drill and a spotweld chisel it did not take much work to remove it
This quarter was the last one I could find for 72 and up cars in the whole US, it seems as AMD has discontinued it. The fitment was perfect and attached very easily.
Before the panel was installed I wanted to apply the undercoating like from the factory, I tried to copy the pattern as close as possible from the original fender and I also painted it body color so I would not rust in the future, as for the undercoating I used the very good factory-style undercoating from Restorations by Rick Kreuziger