How to prepare for SAT Phy/Chem for international students ?!?

<p>Im an international student and an aspiring SAT subject test taker for phy and chem. Ofcourse the material i study differs to the material and syllabus tested on the test. I just would like to know is Barrons and Princeton Review Enough to get a 800 on the tests ? btw please mention your score as well :P .. thank you :)</p>