Do AP Exams and SAT II's Correlate?

Do they correlate in material? What about scores?

I’m taking US History and Literature Subject Tests, and I scored well in both AP Lit and APUSH, so I’m hoping for some correlation there. I’m especially concerned with US History - should I spend the time and money on buying and reviewing a new book, or will my notes from class and my 5 steps to a 5 APUSH book cover the same material? I know that the revamped APUSH exam focused more on broad changes/continuities than the test previously had, and was wondering if the Subject Test is like that as well?

Each subject is different. The best way to determine if your AP experience prepares you for the SAT Subject Test is to go through a prep book for that subject. You can get one from the library. It doesn’t matter if the edition is a few years old as the the SAT Subject tests haven’t changed much over the last few years (CB was busy redoing the SAT I twice).