No clue of originality on the car in this thread, and no clue of date of VIN change of ZL-1s.

But, one thing I know for certain. The 100% ORIGINAL VIN on my block #34 is by the oil filter.

Orig. trim tag & Documentation of VIN 124379N642927
 

According to the info contained in image 123 on page 1 of this thread it states:
Trim Plate data: Build Date: 05A, Paint Code: 57-57 [Fathom Green], Option Codes: X44, NOR # 292794, Trim Code: 711.
However that doesn't mean it has it's orig. trim tag.
In the info of image 123 it states:
Documentation: ZL1 #61, original ordering and selling dealership: Seltzer Chevrolet Yucon OK. Well that means there must be some documentation with that information existing somewhere - otherwise such 'documentation' is not documentation at all...is it. Real documentation is physical documentation not made up info. For me documentation is paper verification, however for others it could mean photographs...Each to their own interpretation to what documentation is I guess. I really like member 'William's quote: 'Learning more and more about less and less. And I have always rated you Charley Lillard - if anyone here on The Supercar Registry is genuine, authentic, honest, trustworthy, and an encyclopedia on COPO Camaros it is you.

I think #64 was bought new by Bill Turner in Ft Myers FLA,when I saw it had a repaint in Silver,engine had been pulled and stored and the car raced with a dif engine.Dont remember when he sold it.Bill is alive and well in FLA.FWIW,Tom

ZL-1 # 64 was the "Aluminum Rat " Ft Myers FL

ZL-1 #4 NHRA NE Division, 1970.

ZL-1 #4 Hauser Camaro

That’s it,Bill Turner.Tom

Hi all. I would just like to say that I have what is left of a heavily crashed ZL1 that has sat hidden away in a loft, covered with dust and bird crap for many decades. All the good bits were long ago pirated, hence I have zero intention of trying to recreate a 'silk purse out of a sow's ear'. The important part, the body number tag is still riveted on (albeit with a bit of a twist in that area, and it may take some careful work to get it straight again). I intend to restomod the remains, and it will never be put up for sale as some super desirable collector item ZL1. It is a sh-tbox that will be rebuilt with as many new panels as I can throw at it, and also some upgrades to the brakes and suspension. Engine wise, big block aftermarket aluminum blocks can be found, but it will never have a ZL1 number on it. I am still going to use an OEM front clip and not go to some full chassis type restomod. What will it be worth in the end? I do not care, it is a keeper and will be used by me as a regular driver, not locked away in a display cabinet.

Helluva 1st post. Welcome to the site. Your inbox will get lit up in a hurry. Regardless of your intent for restoration, please support the hobby by sharing pics and info so the car can be properly documented. Awesome find, I look forward to more info!
Jim

Sounds unbelievable