Yep, unfortunately these look bad on a 370Z. These would fit perfectly and be really aggressive on an evo X. i ran 18x10.5's on my old evo X. Unfortunately that's about the only car they fit perfectly on lol. Sorry, not trying to hurt your sale, but giving you a heads up on where these will be better marketable.... and your price is amazing and they will sell quick!
To give a better idea, i test fitted one wheel on my Z.