to tell if it is an 700r, look right in front of the handle bars, is there a speedo and sh*t?
if so, it is a 700r, if not it is a 660r.
also the 700r is a great trails quad if you know how to ride it. they at 10x better than a 660r. the EFI is nice, the torque is amazing, and they handling better than people here think.
they weigh in at 396 dry, the 450 weighs in a 372 wet, banshee is 386lb dry, the blaster is 324 dry. the 700r is not much more than a banshee in weight. they really are a better quad for a bigger guy.
after test riding a 450x and a 700r, i would pick the 700r every day for trails.