Yes, get under the car and see the length of the driveshafts. If they look roughly the same size, it's an optional Toyota LSD. If the drivers side is a good bit longer then it won't be, unless it's an aftermarket LSD fitted to the original gearbox.
This guys as cool as ice! He always seems to be smiling, even though i can't see him! (Even though hes not smiling on his personal pic!) Haha! P.S - He has good taste when it comes to rims! =)