72 Driver NorthCarolina UNDER CONSTRUCTION

[smokenjoep01]

Well things happened and the painter is running behind. Looking like Monday afternoon till I can pick it up. SO I figured I would get things ready. The heater/ evaporator boxes need to be cleaned, detailed, repaired before installation. Everything looks pretty decent and should go back together fine.
I need to figure out a couple things. First how do you get to the heater core? Everything's apart and there seems to still be a thin sheet metal plate covering it (pic1). Should that be removed to gain access to it?
What do I use to seal the evaporator box back together (pic4)? Whats wrapped around the evap tubes to seal them?
Also there is a small vacuum part that has a arm that is broken but I am not sure what it goes to (pic2)? And a vacuum tube that needs a home9pic3).
My dash vent louvers are not attached to each other and I think they will need to be replaced(pic5 last). Are they repairable or do they just get replaced ? See photos