FWIW he is not listed as part of their Islamic finance team:
http://www.kslaw.com/practices/Middle-East-Islamic-Finance/People
Rather, his focus is here:
Mr. Wray chairs the King & Spalding Special Matters and Government Investigations Practice Group, which represents companies, audit and special committees, and individuals in a variety of white-collar criminal and regulatory enforcement matters, parallel civil litigation, and internal corporate investigations.
http://www.kslaw.com/people/Christopher-Wray
I think I heard Wray represented Chris Christi in the Bridgegate matter.