Sec. 8. Notwithstanding other provisions of this article, a levee district or levee association that constructed a levee before March 10, 1967, shall raise the annual revenue for maintenance and operation by either of the following:
(1) A combination of the following:
(A) A special benefits tax.
(B) A percentage assessment of the original assessments made and confirmed by the court in the original proceedings establishing and constructing the levee.
(2) A percentage assessment of the original assessments.