I don't see how it possibly could be - this version has a door on each side.Not joking, either. if you look through the front window you can see the portside hatch windows. I use a different model from the shuttle on TOS and the modeler played around with different body styling while retaining the TOS look. I'd say the TOS shuttle is the Jeep to this model's Humvee.The Side-by-side comparison (as well as a in-universe reason they look so different):