(a) The corporate authorities of a township may take any action that may be necessary to inform the owners of unpaid bonds regarding the financial condition of the township and the necessity of refunding its unpaid bonds and readjusting the maturities of those bonds in order that sufficient taxes may be collected to take care of these bonds and thus re-establish the credit of the township.
     (b) The corporate authorities may enter into any agreement required to prepare and carry out any refunding plan and, without any previous appropriation under any budget law, may incur and pay expenditures that may be necessary in order to accomplish the refunding of the bonds of the township.