This Part governs personal loans made at a variable rate of interest by banks, trust companies, branches of foreign banking corporations which are authorized to maintain a personal loan department, savings banks, savings and loan associations, credit unions and licensed lenders (“lending institutions”) pursuant to the statutory authority cited above. Loans subject to this Part are to be treated as separate and apart from loans made pursuant to the provisions of Part 80 of this Title. The use of indices for loans subject to this Part must comply with the provisions of Part 333 of this Title.