PART #13931 '66-'67 Chevy II/Nova POLYCARBONATE Door Windows, 1/8" Std (Hardtop) Specify stock doors or Harwood fiberglass doors when ordering. 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.