Good luck with your search - I have no direct parts link though:~
However this may help to get the car going short-term?
Adaptors are available as pictured & link :
https://www.ebay.co.uk/itm/361937831...kAAOSwuZZgMPvy
Also worth looking at prices for these as they can be up/down.
I don't know your spindle size but it could be drilled out if necessary - if it works you can then purchase the arms to suit etc.
Bob.