VLA stands for variable lenth arms (wishbones as you UKers call them, we call them ares) it basically means where the outer hinge pin is on the front arms, instead of 1 spot to put it, there is 2, so the lenght of center to center of the inner and outer hinge pins can be 2 differant lenghts, creating differant geomety and handling of the car.
That car looks good, just put in some modern electronics and swap some new tires ( or tyres as you guys spell it) and it could be competitive with all the new losi's out there. You may also want to redo the shocks and the diff just to be safe.
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