if its offset 30mm for an 18x8 it stiil would be ok (i think) aSSume 8in wide for both
stock na is 38mm offset i think 1/2 in is 13mm and if split its about 6mm therefore the 350z wheels are close to 36mm offset so if you have at least 1/4 in clearance on each side of wheel itsok Did i do the math right ??? Im just babling