If you have VIN 124379N648286 your transmission has been located.....

[BULLITT65]

I saw the description of this car for sale:
https://www.ebay.com/itm/1969-Chevrolet-Camaro-z28/322942831678?hash=item4b30e48c3e:g:i9YAAOSwyYFaKySF&vxp=mtr

the seller is:  14x4guy

and auction #322942831678

So he has this 1969 Z/28 (124379N626613) for sale (up for bid), and he discloses it does not have the original transmission. He shows a good pic of the trans partial VIN 19N648286. So if you have a 69 Camaro with VIN 124379N648286 you are the lucky winner. Hopefully you find this thread and are able to track down the new owner and work out a trade. Good luck!