I have the plain steel on the SC, 356 & ’71 Targa. Only the SC’s rust! I got them from RPM for about what OG has them for & they simply need a coat of paint. Steel, open end is a Club Race & probably SCCA requirement. They are stronger & you can see stud engagement.
Richard – don’t buy just lug nuts, they will ruin your new wheels – go with nuts for Porsches – your hardware store is great but likely will not have the right nut.
I think it’s nuts for you to get SS for your car! Weren’t you the one not doing many DEs this year