67 convertible quarter
 

I need a right rear quarter for a 67 firebird convertible. I've tried all the big parts houses and got the same answer: Don't have any, can't get any. From what I gather, the only ones that were released didn't fit so the mfg is re-tooling and not much more info is available. So a couple questions:
Does anyone know where there is one at? Bone yard, donor car, NOS, etc?
Does anyone have any solid info on when these things are going to be available?
Thanks,