What direction are you going to take with this? I was able to find a complete and unopened one on ebay for a very low price a few years ago. Been working on it off and on trying to make it a G55 AMG.
I usd 1:1 window tint film without separating the film from the backing. I thought it was flexible enough to provide the curve at the top of the glass but it turned out to be too flexible.