temperature sending unit

I have a 67 small block and I want to replace the temperature sending unit, but I cant find one. I ordered one from Year One, part # 3060N, in their online catalog the picture they showed was exactly what I wanted, a TSU with the nail type pin, what I received was not what was pictured, it was a blade type with an additional female connecter with the nail connected to it. I called them and bla bla bla..., they dont have the one in the picture. I have looked all over and cant find one like the elusive part # 3060N. Where can I get one? I do not have gauges,just idiot lights.