Matt,Dry fit your rear window and window moldings,before you paint the car,some minor modifications are necessary to insure perfect fitment. Use rubber shims the thickness of the window ribbon,to space the glass the correct distance from the window channel. The channel may require some cutting and rewelding,or some hammer shaping. Install all your molding retaining clips in the proper locations. You may spend the better part of a day doing this,but it's better to find out now,than after it's painted.