USMLE Step 3 Free 150 2007 edition (test and explanations)

The USMLE organization gives out free sample test with 150 questions. Kaplan used to do explanations for them till 2007. However the USMLE company no longer provides the 2007 edition of this test. I found the 2005 version of this test which is identical to the 2007 test (thus you can use the 2007 explanations from Kaplan.) I used to have an active link that no longer works. You may look for the sample test online.