It is the purpose of this act to provide viable and usable general law standards and procedures for forming and dissolving municipalities in lieu of any procedure or standards now provided by general or special law. The provisions of this act shall be the exclusive procedure pursuant to general law for forming or dissolving municipalities in this state, except in those counties operating under a home rule charter which provides for an exclusive method as specifically authorized by s. 6(e), Art. VIII of the State Constitution. Any provisions of a general or special law existing on July 1, 1974, in conflict with the provisions of this act shall not be effective to the extent of such conflict.