Parts wise, it would depend on which door panel supplier made yours. I used Al Knock door panels, and they were ready to re-install, other than adding the interior trim pieces that poke through the panel. The inner reinforcing of the original door panels was metal. Some suppliers may have used plastic. Metal reinforcing is part of the door panel itself. Upon re-installing, the whole panel hooks ofer the top of the inner door, and then the screws along the bottom of the panel (and the door pull assembly) hold everything on the door.
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold