hi i have barricade zz too and when i got it i wanted to mod it real bad so i figured out how to remove the body.
first you can get a small phillips flat head screw driver or you can just use your thumb
then wedge the screw driver in just a little bit to the right or left of removal clip in the front or put your right or left thumb in the wheel canal
next lift the front bumper and use your other thumb and pull the chassis
then it should come off
if it comes off then youll find a cable inside that conneects the lights to the chassis just pull them off from the base, dont tug on the cable or itll rip
then you have completely removed the body off your barricade zz

oh but if you cant understand wat i wrote then ill just make a video and put it on youtube and put the link here OK