The APU is still located in the back of the 777. The exhaust hole is still there, it's on the left side of the fin.

See if you can access this photo (sorry 'bout the long link):

http://www.airliners.net/open.file?i...UsgLSBFbmdsYW5 k&ktODMp=SmFudWFyeSAxNywgMjAwNA%3D%3D&BP=1&WNEb25u =TWlrZSBNb29yZXM%3D&xsIERvdWdsY=Tjc4MlVB&MgTUQtODM gKE=Q2xpbWJpbmcgYXdheSBmcm9tIHJ1bndheSAyN0wgdXBsb2 FkZWQgYXQgMTYwMCBwaXhlbHMgLSBD YW5vbiBENjA%3D&YXMgTUQtODMgKERD=MA%3D%3D&NEb25uZWx s=MjAwNC0wMS0yMw%3D%3D&ODJ9dvCE=&O89Dcjdg=&static= yes