66 Dart GT HT Whatsitgonnabe?

I also found a little crack in the sheetmetal holding the hinge stud.

As a result of the disassembly, I'll also be needing two of these. I don't know what they're called so I don't know what to look for.

Can anyone tell me whet these lock "washers" are called?

Internal tooth lock washer.

http://www.mcmaster.com/#standard-washers/=z5xyqk