(a) in section 6 of the Act, as that section stood on the 1st day of March, 1960, as if he had made an election pursuant to that Act within the appropriate time prescribed in clause (B) of subparagraph (i) of paragraph (b) of section 5 or in clause (A), (B), (C), (D), (E), (F), (G), (H) or (J) of subparagraph (ii) of paragraph (b) of section 5 of the Act, or