1978 Sovereign Door lock parts

I have a 1978 sovereign door lock that was disassembled by the PO. Apparently the lock cylinder was drilled and removed, which I still have. The interior handles and bolt are missing as well as the inside wall mounted dead bolt handle. The exterior latch handle and cylinder opening is in great condition. Two questions: will the door lock replacement kits that require riveting a plate to cover the original opening have the needed parts, and, who sells the handles that I need for the interior?

Also I am considering adding an additional Stainless dead bolt.







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