Eric, We thought about doing the sliding window in the 97? DeLorean. It certainly would have been simpler and less costly. However, in the prototype design the amount of window that would slide backward would have made a window only about 10" wide. Though this is a larger opening the stock. It just was not larger enough. If would more like a vent than a window. However, from a simplicity viewpoint this would be easy to do. However, the one additional problem was makeing a curved seal for the mating of the two windows when closed. Since this would have had to be custom made this would also have been costly. If you do not care about a seal. Go for it. bob Brandys