Which rear end ratio I have, and what Aero version ? The VIN doesn't tell me, and the paper work from the dealership doesn't tell me. Who's gonna tell me?!?!

Need more information, What model, what transmission and a pic would be good of the spoiler, splitter and side skirts.

^^^

There are no rear end ratio options! All dependent on knowing model and trans.

There is an aero option and the price would show a ~$2900 or ~$3900 option. A model and pic will answer if the car comes with a "poverty Splitter" and 3/4 not full side skirts.

It's a 2017 A8 Z06 Coupe. I was looking at the 2017 production numbers and the axle ratios numbers didn't corresond to the transmission numbers, so I figured there must be options, although I didn't see any on the order sheet. I know the auto's and manuals have different gears, with the manuals being taller, but I thought there may be option i missed. Thanks

Rear axle, 2.41 ratio, electronic limited slip (eLSD)

https://www.corvetteforum.com/forums...ge-levels.html

Thanks alot. Thats just what I needed to get educated!

And you can order your original window sticker / build sheet info from the National Corvette Museum to get all the details on your car.

Additionally, if you don't want to spend the money, go into a dealer and from your VIN they can pull up the order sheet for you car and probably print it out for you. They can also pull up the vehicle service history too.