Nube with a question

[atcaw94]

I just got an Xmod today from a friend of mine who was moving. It's got everything but the instructions. It's a Nissan Skyline. I think it may have an upgraded motor because there was one in the box the car was in.
Can't figure out how to install the batteries It looks like the body has to come off, but how does it come off? I don't want to break it in the first 15 minutes I have it