If you find another fuel filler neck let me know. I've been trying to find one.
Riddler
Ever thought of a cordless sawzaw and a big mall parking lot. Joking i will check some yards around here.
Cleveland Pick-A-Part Columbia, OH 1-440-236-5031 has 6 good used quarter panels in stock so it appears they are actively buying these cars. Maybe they have a damaged quarter panel with your good section. Might be worth a call.