I finally tore the back end apart to find my water leak. Well i found it. Its the metal part that covers the fuel filler tube that attaches to the inside of the quarter panel and the floor. Looks like its just screwed on with sealent in between. I'm not sure what they call it but every book that I have doesn't even show it. Does anyone know what its called and where I can get one. Kinda weird no rust anywhere else around it, but this thing has got a pretty good size hole rusted through it. Thanks for any help.