Thumper if you do end up using lexan make sure you spend a few extra bucks and go with mr5000 (Margar) As it holds up a lot better then the cheaper grades. Do not use plexiglass as it cracks and yellows. Ask me how I know.http://www.hotrod.com/techarticles/lexan_windows_install/ http://www.hotrod.com/techarticles/lexan_windows_install/