12 bolt rear covers

[enio45]

I trying to determine:

1. on the 68/69 camaro rear end covers - were they the same and did the assembly line correct ones have the notch cut out or not?

2. anyone have experience with the reproduction ones - differences compared to assembly line ones?

Seems to be plenty out on the web, originals and repops.....want to stay original, but am open to other considerations and your experience.

Doing a high end resto on a 68 L78 car - appreciate the thoughts.