Check on line with Aircraft Spruce aircraft supply and or Chief Aircraft parts in Grants Pass, OR I have bought the mar proof quality Lexan 1/8x4x8 ft. sheets years ago from a plastic supply whole seller in SO CA , I still have it most of left
I plan on doing just the door windows on my 70 'cuda so I won't need a 4 x x8 sheet.The local shop wanted $244. bucks for a 4 x 4 x 1/8" For that price I'll just leave in the old plexiglass at was in it when I bought it.