I know its not Chevelle but:

I need to buy a quarter panel patch for my 65 Impala. I can only find patches that are about 19"x61". I need a smaller patch. I have a hole behind the rear wheel and the bottom of the area under the rear rocker molding is bad only about two inches up from the spot welds. Heres a pic of the bad area:
http://www.chevelles.com/showroom/ccarney69/quarterrot.JPG

Does anyone know where I can find smaller patches?
Can anyone post links to suppliers?

I'm sure I can buy the larger patches and cut to fit the area that I need replaced, I just dont want to if something else is availible.