i have just bought a 1987 cougar ls. there is no rust (with the exception of surface rust from scratches) except for under the rear window. it did not look so bad untill i started to pick at it and now there is a hole under the window. i have looked online and found nothing. i was wondering if anyone had any advice or if there is a replacement panel i can buy and put in. at this point anythig will be helpful.