Hi, I am looking for the gasket or seal, that goes right up next to the roof of my car where the sunroof is. The gasket isn't the one around the glass, the one I need sits in the cutout of the car roof and helps to seal the sunroof when it is closed,it is rectangular and grey in color, about a 1/4" thick and maybe 1/2" high,follows the contour of the sunroof cutout in roof of car. A few months ago I saw one for sale on a website,but now cannot find the website.Any help finding this part would be appreciated, Thank-You. It is a 1991 Buick Park Avenue Ultra