I cannot say for sure but from the available info, it does have a high degree of fitting either the E760 or the E770 into the Storm Scout. My analysis is:-
ATX is 305x244
E-ATX is 305x330
And EVGA E770 is 305x264
EVGA E760 is also 305x264
So, the 2 mobos are not full size E-ATX and the difference is +20mm. From all available pictures in the net, the distance between the edge of an ATX mobo and the 5.25'' bays frame looks a little more than 20mm. So, it will be a tight fit.
One important issue is whether the horizontal SATA ports along the edge of the E760/770 will clash with the case. However, the pics below show that this is unlikely.
E760 SATA ports
Storm Scout Harddisk cage with adjacent empty space
Finally, the pic in the post above is taken from post #11778 in this thread. There is another pic as well.