Irrespective of any limitations contained in this chapter, the Supervisor of Savings and Loan Associations may adopt rules authorizing or empowering any association chartered or operating under the provisions of this chapter to:
(1) Pay or give any premium or other concession for the opening or increasing of a savings account to the same extent that the payment of premiums or the granting of other concessions may be authorized for a federal association doing business in this state;
(2) Designate the legal relationship between the association and the holder of a savings account with the association and the name to be given the savings account in any advertising or public description of the savings account to the same extent that those designations and legal relationships are authorized for a federal association doing business in this state;
(3) Adopt any dividend or interest paying date or other procedure or practice with respect to the paying of interest or dividends authorized for a federal association doing business in this state;
(4) Adopt any business practice, procedure, method, or system authorized by a federal association doing business in this state, except nothing herein will permit an extension of a state savings and loan association's branching authority beyond the limitations of state law; and
(5) Make any loan or investment that a federal association doing business in this state is authorized to make.