My PO put these on a 1973 v-8 converted Sheridan bodied.
I don't know alot about 5-lug conversions or spacers for very large wheels, but some threads I've read seem to question the safety of what I have. Certainly it's alot of unsprung weight but I'm primarily concerned about safety as I plan to track the car this season at Summit Point.
What alternatives do I have and or what modifications could be made to make these better/safer or am I just being a worry wort?
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I'm not a fan of threads in those thin spots. But a machine shop could easily open those up for real Porsche/Verbus press in studs.

Could you expand on this comment or point me to a thread? That sounds interesting!

Where those are threaded in, drill that out to the right size for studs.

Thanks for that! Looks like a much safer way to do it :-)
D

Make sure they spot face or 'make flat' the area where the stud lip/edge will sit.

Image stolen from Eric at PMB Performance who sells kits to do all this.

I'd be concerned for the incredible leveraged load you're putting on the wheel bearings

here we go again.......