The provisions of this part shall be considered as amending and supplementing: Department of the Treasury Circulars Nos. 530, 653, and 750 (31 CFR parts 315, 316, and 321, respectively), and Department of the Treasury Circulars, Fiscal Service Series Nos. 1-80, 2-80, 3-80, 3-67, 1-98, and 2-98 (31 CFR parts 351, 352, 353, 342, 359, and 360 respectively), and any revisions thereof or amendments or supplements thereto, and those Circulars are hereby modified to the extent necessary to accord with the provisions of this part.