What is the maximum length graphics card supported?
The CM Storm Scout is designed with portability in mind. It can accommodate the largest 280GTX or HD 4870 X2 type cards. This includes all GPU 10.5" or 267mm in length or shorter. GPU cards have a maximum clearance for 10.6" or 270mm maximum length inside the Scout.
EVGA GTX 670 FTW is 10" so it will fit, and nice pick btw.