I am restoring a 67 Plymouth Fury III convertible. I have the engine annd drive train 100% restored and shining I have the body repaired, sanded and primed... with one exception. The drivers side 1/4 panel is beyond repair. I have searched high and low with no luck. Can anyone tell me what I do if I come to a point where I simply cannot find the correct body part? what is the proverbial last case scenario?