Ok, after studying those photos I think mine is a SWB - here's a photo of the shell (Don't laugh, IT'S NOT MINE... I don't even know what that crap is he's scribbled on the front...
).
The chassis has the wide, square front and the wheelbase is only about 260mm. From tip of bumper to back of motor guard it might just stretch to 390mm, but that doesn't sound long enough to be LWB?