Don't waste your time with the OEM heads.
http://www.crutchfield.com/p_130APPR...FFDouble%40DIN
Anything iPhone 4s compatible is gonna be DVD or NAV, other than the above. There are alot of iPod compatible digital media recievers without cd and alot of iPod compatible cd recievers that are full DD size that look good, better than OEM, but they aren't iPhone compatible.