My 1/77' car came to me with an armrest/lid. Judging by how bad in shape it was, I want to say it was original but I have no way of confirming since I trashed it when I rebuilt the interior. I recall that I did dis-assemble it, or rather, I took the pieces broken pieces apart and made the decision just to replace the whole thing. Like most of the interior parts, the arm rest is not overly complicated. Just a couple of screws on a long wire hinge make it function with the console itself. The release lever is one piece that pivots and a spring that makes it return to the latch position. I don't know about repairing the screw holes as I did not attempt it, but it seems possible. I do have a spare armrest from a parts car if you need pics. This pic from the PO is from when I picked my car up.