i Cant find rear quarters skins for my cuda anywhere..anyone know where to go??

There are a few more parts that i need before i can get the body on my 67 cuda notchback all buttoned up and both rear quarters skins are being a pain in the *** to find. Everytime ive tried ordering them from someone i dont hear back for weeks about them or after 2 months they call and say they dont have them in stock. getting frustrated:banghead:. if theres anyone on this awesome site that can be so kind to point me in the right direction that would be great!!