Yes, thanks. I have all of that hardware (minus a missing bumper if anyone has one, or a source). I fully understand its construction.
I'm just curious as to why it was updated in 68? Thought it might not be as secure as a latching-style door and what interchanges. Typically engineers update designs for a reason.
Can parts swaps allow for the later-year components? Like if I swapped the door/switched over to the piano hinge... etc.