Funds made available pursuant to subsection (b) of this section may be used only for guaranties for Egypt and Israel pursuant to section 24(a) of the Arms Export Control Act [
22 U.S.C.
2764
(a)]. The principal amount of loans guaranteed with such funds may not exceed $3,700,000,000 of which $2,200,000,000 shall be available only for Israel and $1,500,000,000 shall be available only for Egypt. The principal amount of such guaranteed loans shall be in addition to the aggregate ceiling authorized for the fiscal year 1979 by section 31(b) of the Arms Export Control Act [
22 U.S.C.
2771
(b)].