Back when I was setting up my front brakes the hot setup was using the stock rotors, with Toyota calipers. The thing was I wanted to use some Weld Wheels I had but they had a Chevy bolt pattern. I was in the garage and had a set of Chevy drum hubs that came off my '62 Impala (swiched to discs).So for the hell of it I tried them on the Datsun spindle, and they fit perfectly, even the bearings fit like it was made for a Chevy hub. So I adapted the stock rotors of the Datsun to the Chevy drum hubs, and used the Toyota calipers,and my Weld Wheels.
What I'm getting at is, the stock Chevy hub should fit your spindles, give it a try. Then all you have to do is figure out how to mount the calipers.