I don't believe that the 09 version will work in the 07-08 models.
I purchased a V92 box from Ebay that was listed as 07-09 Acadia. The GM part number is 25909568. There has been a change in the box that I believe makes it unusable on 07-08 models. This box was missing fuse and relay connections for my fog lights, not just the fuse and relay but the connections underneath. (Circled in Yellow) The big change is that there is no fuel pump relay and fuel pump fuse. There is now a FSCM fuse (Fuel system control module) The open spots and the FSCM fuse are circled in Red. The open spots are listed as "Stop lamp china only"http://i1238.photobucket.com/albums/ff489/GSTOMKINS/09FuseBox.jpg
On my 08 Acadia SLE which has fog lights. (circled in Yellow) The Fuel pump relay and fuel pump fuse are circled in red as well as the spot where the new box has the FSCM fuse. This is listed as a spare in my box.http://i1238.photobucket.com/albums/ff489/GSTOMKINS/08FuseBox.jpg
Will be returning fuse box to vendor.