I have been wanting a 72nd C for years, my holy grail kit. Hasegawa did a 48th kit back in 2010 if you can find it.
It also had inflatable bags in each wing and the fuselage to help it keep afloat if ditched and other emergancy equipment. But with the wings un-folded, the only visible differance would be the hook. It was also intended to carry a torpedo as well as bombs.
The only thing stopping me converting a B is that i really want the wings folded.