1970 Duster Front Brake Conversion Kit for SBP

I would go back to SSBC and ask them to provide correct 7/16 studs for their product. Mine came with both sets of lugs but that was almost 20 years ago. If you get studs that weren't provided and they screw up the hubs it will be on you instead of SSBC. I presume the studs they supplied are 1/2 inch?