Bro get what ever you like, your the one paying for them and your the one flaucing(pimpin) your ride on the streets. just my

If you want to do chrome go right ahead but chrome is heavy. Go with an RBC/SBC finish= chrome like look with much less wieght.
Ther are some real nice chrome wheels out there that would look great on the Z like Maya's, Asanti's, Lowenhart

As for my pimpin rims, not chrome but I'll post anyway
Never seen them on a Z so far
Volk GT-FORCE