question for 370z owners with sport package

EX350

I'm in the middle of searching for the right 370z. However, I would like to purchase one with the sport package. In recent searches, I realized that the only way I could distinguish from the base model and models with the sport package, were the rims. If someone replaces the stock rims with a different set of rims, how can I tell if it has the sport package? Buying from someone private wouldn't be an issue, but I've seen some cars on dealers sites that claims theirs have the sport package, but clearly it didn't.

Any feedback would be appreciate it. Thanks!