[Motor City GMC]

I ordered a set of "coverlay" brand replacements for my 79 K30, and I had them out of the box for about 20 min before I boxed them back up and shipped back. #1 They are alot thinner #2 The inside window felt is sstapled on, which is bad because when this cheap piece wears out you cant replace it and also because the factory felt also has a clip on it to secure the panel to the door. #3 The plastic in and around the holes for the screws to secure it were so thin that the screw heads pulled right threw it (thats hand tightening with screwdriver)
My advise spend the money on a original pair and dye them, it wont cost you that much more.