Is the plastic sheeting the same for post versus hardtop? How about 442 v GTO v Skylark v Chevelle? Same?

I saved the rear plastic panels/sheets that were behind qtr arm rests and window cranks in a 67 post car. Don't what it is called. Would anyone want these to use as templates? I would like something for saving them rather than chucking them.

Thanks.

Layne