The 2 months of neuro doesn't actually have to be in the intern year, just sometime during training. (UNC for example, has one month in the intern year and one month in the 4th year). Of course, 2 months in the 1st year is the most common setup.
Although it varies by program, electives can be relatively open, determined by the resident. At one program I know of, even the medicine months include an elective, so the resident can do cardiology, or ICU, or rheumatology, or palliative care, or whatever.
At the same program, I met a resident who has an interest in psychosomatic medicine, who did a neuroradiology elective. So I guess, depending upon the program, you can do nearly any kind of elective you want if you can justify it.