Would you guys consider this as a "panel"?

Anywho, I picked it up from a good ol friend that just past away Sunday.
350/4spd soon to be a SM456? 5spd from another friend.

Any info on where to get a new or rebuilt door locking mechanicals? Looks to be very used and worn.
Anyone know if there are other options for safety sake?
Back 'barn' doors are ok, just need to lock the fronts.

Starting a mobile blasting business (dustlessblasting.com) and wondering how much weight I can haul "inside" plus towing a Ingersoll rand 185 diesel compressor.
(want to keep most all of it inside and locked up while plumbing the hoses out the wall)

Thanks. The BIG bolt '64 is getting a hydroboost from a bus and axles from a '94 budget rental truck.. The saga continues.

E