I'm putting together a 48 Willys Jeepster that someone else started. Of course I'm missing some pieces! But my question here is how does the wing/vent window mount to the outer frame. I know it has a lower piece that goes through the channel and bolts to the frame(piece missing!). There is a hole for the top and the outer frame is threaded. I've done other vehicle restorations so this is no problem. I've never done a Jeepster and putting something together that someone else is a pain. Thanks for any help.