The Shah of Iran built on what his father had started, and what the Allies are trying to do now. A balance. Iran under the Shah had balance and the benefits of both modern society and an understanding of the requirements of Islam.
The SAVAK was much more about Islam than western mores.
On what do you base this on? THe SAVAK was an instrument to curb communist and islamist subversion. They may have been brutal in their choice of methods, but that's probably the way to deal with terrorists and communists. There was nothing particulary Islamic about them.