The 68 Yenko axles are confusing.
About 2/3's are 4.10. 1/3 are 3.73.
The 3.73 axles are later, but there are some late 4.10 axles too.
4.10 - there are a few QD axles, but also a bunch of BV axles.

Thanks Kurt. Here’s a pic of the rear.

This ad also mentions these cars had 3.73 rear ends.

Thank you for sharing the rear photo and information. If you say it’s born with to the car I have to believe you. Since the 3.73 is more common than the 4.10 there will be a lot of enthusiasts questioning the difference between 5-23 axle date and 07E trim tag date. Cars usually were built 1 week or later after the trim tag date. So people will question 2 1/2 months between the two dates. Your eBay ad says you have the NCRS Report...what production date do you have on the report ? Thanks for the information.

Actually, your wrong again Doug! There are countless examples that rearends were put in the car anywhere from 2 weeks up to 4 months of the build date. Let me know if you need examples and proof on this also. If you bothered to look at my ad there is a picture of the NCRS report. I’m not sure what your angle is here, but I would honestly appreciate it if you would quit trying to downplay my car. If you have further comments please PM me and I will settle it with you directly!

I was asking questions and you get defensive. The car community does question rears 2 1/2 months prior to build. I have zero interest in your eBay car. I do not hide behind PM’s. or play those games.

Simple math would tell you it’s 2 months and that’s not unusual. I don’t hide behind a keyboard, hence the PM and I’ll talk to you over the phone or in person. You’re the one playing games. You’re doing more than just asking questions. You know what you’re doing. I’m just asking for you to knock it off.
“eBay car” - That’s cute!

Congrats on the 68 COPO find. Did the former owner know what he had sold ? A nice pay day for him/her and great day for you. Hope the car gets restored to its former glory, not many of these cars remain.

Yes sir. He's well aware of what it is and he was happy! I still keep in touch with him. I have pictures and videos of where the car sat since 1976 along with the owner I will share to whomever buys it.
Cheers,
Dan

I understand completely! It was just getting to be a little much! =)