What you need is:
280zx wheels, whatever size, if non-turbo get the non turbo ones, otherwise, you will need the ones with the +20 offset.

I've managed to get wheels, only needed a 1/4" spacer to clear the calipers ( except a tiny spot I need to grind off the rim.

it'll help to get aftermarket mag wheel nuts that have threading all the way down, unlike the OEM ones that have like 1/4" at the start not threaded.

you can't fit anything bigger than 6.5" wheels without messing with the offset.