Insofar as the provisions of this Article are different from and in conflict with the provisions of Chapter 511, Session Laws of 1947 and Chapter 63, Session Laws of 1951, to the extent of such conflict the provisions of this Article shall be applicable and shall  supersede and prevail over the provisions of said former acts and all provisions of this Article shall be in full effect. So long as assessments are made under this Article, no assessment shall be made and collected under the provisions of Chapter 511, Session Laws of 1947, as amended. (1959, c. 309, s. 16.)