The wheel bolts I got with my period Wolfrace wheels were not the correct ones. They had the wrong taper so an extra washer had been added to try to compensate.
The correct bolts were tricky to get hold of but strangely enough I could get M14 x 1.5 Wolfrace nuts which were originally made for the VW Campers.
I got a set of screw in studs from Machine 7 and fitted them at the weekend.