Not sure if this helps, but 1980’s Morgans also had the option of Rostyle Wheels - are there any of those on the Bay of e that might do?

Allon White have just sold a 1983 car that had them fitted - 4 studs too - Here


Paul
Costock, UK
Plus Four 75th - Furka Rouge - Pip
Disco 5
Teddy - 17h1 Irish Draught cross