rear 1/4 panel,
Part# F5LY 6327840 A, price 704.05 (98 mitchell book) which means its around 1400 now.
19.8 hours to R&I pluass all of your internal reinforcments which add up to over 200 plus about 5 more hours to R&I.
Mind you this is JUST sheet metal time, and does not include labor to pull the back glass which will also need to be done. If this is'nt done properly, you will ned a new glass and moulding because you will crack it all the way down the middle of it. You also need to add refinish time, and cost of materials to get it into paint.
IMHO, make him buy you a different mark, because it's prolly gonna be cheaper for him. and you will still have the one for parts.
Mike