left / right on a SSBC NON slotted / drilled rotor?! Help!

Thank you all for your replies. Many thanks. I just ordered then from summit as they have some in stock. I will be installing them next weekend and I’ll post if they work / are correct etc.

Thank you again and @harrisonm yep they went out of business. Website gone. Phone number out of service. :(
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Well, damn. Fortunately. I called them several years ago with a question, and they told me that their kit was based in 65-67 Mustang. So if I have any problems, I know what to buy.