<p>Now that the SAT has the writing section included in SAT I, the SAT II Writing subject test does not exist any more. But the two tests are similar.</p>
<p>I have found that Barron's SAT II writing book was quite good, in the past, and even in now for the writing section in SAT I. I'd recommend that book for anyone. Although it might be difficult to find them now, since they've stopped printing. But it's a real good book...and will ensure 800 in the writing section for most, if you've read all of the book and done all of its exercises!</p>