All proceedings relating to the making, levying and collection of special assessments authorized by section 1 and the issuing of bonds, except as otherwise provided in this act, shall conform as near as practicable to proceedings provided for townships in Act No. 188 of the Public Acts of 1954, being section 41.721 to 41.738 of the Michigan Compiled Laws, except that special assessments may be paid in a number of equal annual installments not exceeding 15, as the board may determine.

  (2) The township board if authorized by a majority vote of the electors voting may, at the time of issuance, pledge the full faith and credit of the township for the payment of such special assessment bonds.