I know you guys have heard this before but,there is a limited availability for nice wheels without going custom, for a 4-113 bolt pattern.

Does switching to a 5 bolt hub solve the problem?

There are a lot more z32 wheels available.

The 5 lug conversion is an option and will provide a larger selection of wheels but will involve a bit of labor when it comes to changing out the rear stub axles. An alternative is to use wheel spacers on the existing hubs. Figuring wheel offset and width is required in both cases. Also, if you search the archives, you will find a number of threads on this subject. Hope this helps a bit?