Why does selecting DU00 and DU01 both show 75 model cars with the slower 5.X 0-60 times? I thought the DU00 was supposed to be the uncorked version?
Nothing in EV-CPO indicates which cars are "corked" or "uncorked" -- there are no option codes for that, as far as we know. The DU option codes only signify the physical drive unit in each car. "Uncorking" is a software only change that apparently some cars are eligible for activation. Please do not rely on EV-CPO to tell you "corked" status. I believe DU00 drive units are capable of being uncorked, but not that all of them are uncorked.
Also, is there a way to tell what is in the premium upgrades packages? At one point it did not include the stereo upgrade. Now it's hard to tell from Teslas listing what is really included.
If a car as the AU01 code, it has the updated stereo system. If you're unsure, open up the Tesla detail page, and it should be displayed as "Ultra High Fidelity Sound".