Update - I replaced the acrylic (plexiglass) with 0.093 (inches??) thick Lexan polycarbonate. I sealed it with Lexel brand clear sealant that is designed to adhere to plastics, etc., and installed some 1/8" bar stock aluminum around the edges of the panel. I now have to lift my Kammback to meet the aluminum bar at the top of the rear and it's not quite as aero as it was, but no leaks after 3 weeks and several rains and long trips!!
I'll get off my butt and get photos soon. Going to a vehicle and transportation fair for little kids this weekend - hope the kids enjoy my car as much as the fire/trash trucks!
