[NOTE] This an UPDATED GUIDE currently only works with OS X 10.9.4 version.
PHOTOS
Note: 1st picture below is a 10.5" GTX770. 2nd and 3rd picture is a 9.5" GTX760 whose PCIe power connectors impede installation of the AKiTiO top cover.
+more photos in the spoiler . . .
HARDWARE CONFIGURATION
Apple Mac Mini 2012 16GB with Intel HD 4000
AKiTiO Thunder2 PCIe Box
Corsair CX750 M
EVGA GeForce GTX 770 4GB
2x Thunderbolt Cable
HDMI
SWEX
Monitor (ASUS VG248Q