Help / '69 Z/28 air cleaner opinion?

[jerry455]

Hello,
This site is a great resource- so many knowledgeable guys on here to learn from.
How does this air cleaner base look off my Brother's '69 Z/28 that I've been helping document & fix little mechanical issues. (car has the ducted hood- not sure if it was added later or original) I read several places that the assembly-line versions are referred to as having a "Flat Base"- hard to tell what I have unless someone has seen several to make comparisons. I took a few pics. There was one for sale on here recently and this one looks the same to me? The car does have the original Holley carb, not a reproduction and still has the small fuel line bracket off the carb base.
Anyways, check out the pics and let me know your thoughts?
Thanks!
Jerry