PART #13921-T '66-'67 Chevy II/Nova GREY TINTED POLYCARBONATE Rear Window, 1/8" Std (Hardtop) Specify either stock cut or flush cut when ordering. Stock cut is when using factory trim. Flush cut is oversized. This is for the Sedan/No Post. Some minor trimming may be needed for proper fitment. POLYCARBONATE WINDOWS ARE CUT TO ORDER OUT OF FLAT SHEETS AND ARE NON-RETURNABLE. If you have any questions call 800-822-3392.