Mooron I used 3- 4X8' X 1/2" thick sheets of Lexan replacing all my
side windows. Tinted dark. It's good stuff, I can take a 20 pound
sledge and with the widest swing bounce it off the windows over and
over again without any damage. However it has become dull, scratched,
and crazed over time(8years). I'm going to try to polish it this
summer, but if I can not get it clear again I'm going to replace it
with custom curved armor glass. Glass may cost more but a clear clean
view in the long run is worth 10X thew money in the long run IMO.

Joe