Any of you guys running 18" 350Z wheels on a 2007/8 sedan? How's the offset? Can you post some pics?

Dont think so. Coupe offsets are much lower and more aggressive than sedan offsets. Most sedan offsets are in the area of 35-43, where as the coupes are from 15-25 or so.

I've seen them on a 1st gen sedan.
https://g35driver.com/forums/archived-sales/198683-sale-07-z-rims-5spoke-bridgestone.html
How do the offsets of the 2nd gen compare to a 1st gen?