Thanks guys! The gold turbines on the hatchback are a bit of a mystery. I bought them used in rough shape and refinished them. They are 14x7 with an offset of -9mm, and designed for a stepped lugnut with a washer. They have a stamping on the back that says "IMCO" Based on what I read here: http://www.roadsters.com/wheels/
IMCO stands for International Manufacturing Company, who made a lot of knock-offs of popular styles (Torq-Thrust, Turbine, Slot Mag, etc) for Datsun as dealer options on Z cars. If anyone knows any more information, I'd love to hear it.
Here is what they looked like when I got them:
Here they are after I had the bent one welded and machined, wheels blasted, and two of the three in the pic sanded and polished:
Now powdercoated and with tires mounted:
I usually keep the Hayashi Perrier Mesh 15x7 on the hatchback, but sometimes I like a 14.