Happen to know 'a guy' who has an NOS in GM box, Fat wheel with hub assy.
I'll have him try to check this week on grip circumference and anodizing of spokes.
Might be 2-3 weeks, though.
Him a busy boy right now.
But there is "some" hope for your quest.
You'll at least get a picture of it, at minimum. lol
Happy Bday !
