Nothing in this chapter supersedes any provision of the National Manufactured Housing Construction and Safety Standards Act of 1974 [42 U.S.C. 5401 et seq.]. No design, construction method, practice, technology, material, mitigation methodology, or hazard reduction measure of any kind developed under this chapter shall be required for a home certified under section 616 of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5415