Has nothing to do with a body mod, in fact it is a suspension mod called bag suspension.
Essentially when the car is mobile there are bags under the springs will inflate (see the blue subie with the hatch open and what appear to be an air tank)
from a tank prepared to pressurize and thus inflate the bags.
Once parked and set to be stationary (I.E. Show ready) the bags deflate to a predetermined fitment in which the car will sit as low and close to the ground as possible.
And if you were wondering, performance bag suspension actually handles better than a coilover system on the track,
only downside is highspeed straights could cause a bag to pop....not a good thing at all.
The quick release pin set on the bumper is simply used for drifting purposes and easy access to the bay.