Chrysler convertible rear window

I just bought a 85 Lebaron 2.2 turbo convertible. the rear window is busted out of it. it looks like someone glued a thin sheet of plexiglass on and that broke out. Where can I find some of that thick plastic to replace it?

the probably had plexi glass....i suggest you get the assembly from a junk yard, its not that hard to do with two guys and the correct tools, dont take the cheap way out, you will only have problems with water getting into the car. Ebay used to have them when i was finding a motor for mine.