'68 Dart Convertible: Door Post/Frame repair?

Hi Jim,

Thanks for the picture. That's the area I was trying to clean out before. Mine are full of rusted together leaves, seeds and bondo or something, I couldn't get a drill bit in a cordless drill to go through before. i guess I will have to take out the plastic arm rest panels and see what's up with that area.

Is that the factory installed sub frame connector ( torsion box? ) in the bottom of the picture? I've seen some mention of them on one of the threads here. I'm still not sure if the sheet metal mentioned higher up the thread here is enough to stiffen the door post strike area or if I need to examine some greater frame/rocker connection issue.

All advice gladly accepted folks.
Thanks
PinkGT