DON, no not every spindle, but I have made/modified hubs to fit odd-ball spindles. Like Euro M/C side car wheels, Fiat spindles, airplane wire wheels, etc.
I have an inventory of odd hubs that I may be able to fit your spindles. I just made a set of wheels and tires for the "Super Snake" Don's 67' FED SOHC dragster, and I had the exact hubs, rims, and tires he ran on his car in 1967.
So if you'd like some wire spoke wheels on your slant 6, call me, 805-444-4489, and think about sending me one of your spindles, when you are ready for some "Down Time".
And once we have hubs that will work on your spindles, then think about what size wheels and tires you'd like, that will change the look of your Hot Rod.
Jon Hansen, Hayden Wheels.