I'm looking for 67 Barracuda FB door glass sliders. These black soft plastic pieces clip on both, inside and outside at the front edge of the glass and keep the glass running up and down in the vent window post channel. There are two sets per door. they snap together to sandwich the glass between them. One set clips close to the top and another close to the bottom. There is also a piece of clear plastic that goes with them and they work in tandem to aid in the window sliding up and down the channel. Anyone have any?