We bent up two pieces to repair my 1970 Buick Skylark window channel.Both were an angle shape with a curve rolled in .When they are butted together they curve around and give a place for the glass to sit and the top piece slipped under the skin. Mine is a convertible but it would be the same for a hard top. It is a pain to weld ,real slow but it can be done. This woulbe a real nice part for someone to manufacture because no one does and it is a real common place for rust.