google says this is 494.5 cubic feet. With rough calculations based on my D90ST, you are very close depending on tire size and bumper configurations.
On the low end I estimate my D90 ST to be 13 x 5.5 x 6.75 feet which is under. If you choose a bit more generous 13 x 6 x 7, you are over.
No idea how a SW differs in height. Put a stock bumper and some baby tires on it, throw spare in the back and i think it will fall within 14 cubic meters.