After the acquisition or improvement of a project ordered pursuant to NRS 271.325 has begun and any special assessment thereon has been levied and divided into installments, the governing body may modify the project subject to the provisions of NRS 271.640 to 271.646, inclusive, by:
1. Eliminating a portion of the project;
2. Making changes or additions to the project;
3. Modifying the assessments to reflect the changes or additions to the project;
4. Modifying the assessment installments and the due dates of the assessment installments; or
5. Any combination of subsections 1 to 4, inclusive.