Since I had no other options - I bought C2C trunk floor extensions and trunk floor. The beads are not as deep as the original and they had to be tweaked to fit, but the metal is thick. Overall I was pleased with results. I can take pics if needed.
Regarding quarter panel skins, or even lower halves - THERE ARE NONE good quality panels... I found a company in Canada that makes them (they have multiple listings on Ebay). I called them, they make them by hand forming/bending (they prefer not to tell about it). I ordered a set - what a POS those are... Thin metal, the shape is completely off, creases in the middle of the panel... I ended up ordering sheet metal and making them myself with more satisfying results.