I expect it's Halibrand stuff you have...here's a link if any help.?
http://www.halibrand.com/
If the above no good perhaps the Vintage racing and Cobra crowd can lead you to parts but if not can you thread the holes to a good quality wheel stud size and use them as your pins?.
Maybe added sleeves w/ tolerances enough to rotate if this is necessary?.
Cool stuff Dog...what are you running this setup on?.
~ Pete
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I like real cars best...the REAL real ones!