:I test-fitted a set of Blitz Technospeed Z1s on the Z and they didn't clear the calipers. The front wheels were 19X8 with either a +44, or +45 offset. :I also had a set of 18X8 Konig Monsoons which wouldn't clear the calipers without a spacer. It also depends on the spoke design, so your wheels might fit. I would check before buying them though.
you can blame spoke design on the 19x8s (+44 or +45) not fitting on your car since the offset & backspace is close to stock with the listed set up.
rice is a smart man/grain. you should listen to him. - infinite loop 00:04:14 09/06/01