Cragar SS Lug Nuts for my '66 Barracuda

I got some new Cragars for my Barracuda, but there seems to be a shortage of lug nuts available anywhere I look. Seems they're all on back order. Does anyone know the specs on the proper ones for my application and where they are available? I think I read somewhere the new ones are different from the ones back in the day. Angled washers maybe?

Thanks