How are they flawed?
Info on mod plate laws:
A P Plater CANNOT drive a vehicle with a mod plate that has anything to do with engine modifications unless they have acquired a high powered vehicle exemption. Eg. Engine conversions (eg. 4age into ke70), turbo conversions.
A P Plater CAN drive a vehicle with a mod plate that is not engine related. Eg: Fitting bucket seats, fitting roll cages, registered two seater, brake upgrades.
They are the laws. What you can get away with is a different story.