Here's what I've got for dimensions on my '07 F-30:
BL: 19 3/8
LBW: 15 1/4
UBW: 11 3/4
WW: 9 3/8
NHD: 3 1/2
TD: 4 3/8
TL: 41
So, at least from these two examples, it would seem that the GSR is a quarter inch narrower across both bouts compared to the Aragon, and slightly slimmer at the tail.
While we are on the subject, I took the F-30 to a jam last night, as it is the only six-string I have with a pick-up. We started playing unplugged, passing our guitars around for others to try (including vintage Martins, a really nicely-aged Gibson Hummingbird, an Eastman, a custom-built spruce/cherry orchestra, and an American Ovation from the New Hartford shop). That little F-30 shone like a diamond in that group. Easily the loudest guitar there. I even got complements from the Martin owners, as each took their turn with it.
I would not have traded that F-30 for any of the other guitars passed my way last night.
Neal