'71 quarters

Hi, i have a '71 firebird that I'm starting a restoration on. it needs a rear quarter on the passenger side but all I've been able to find NOS are skins. I might be able to get by with a skin but it would mean A LOT of bondo. i guess my next option would be to cut from a donor car. Does anyone know what years would work? i thought only 70-73 but i've heard of putting 73 and up fenders on these earlier cars and it looks pretty good. If anyone has any info i sure would appreciate it, there just aren't many of these around that people want to cut up. i sure wouldn't want to cut one...

Or maybe the quarters will work off of a camaro?