The obvious one would be the oil catch-can if it breathes to atmo, even with a filter on it.
Possibly they could pick on the brakes, but they'd have to be anal, and after taking it for a drive they should realise there more than adequate.
Rolcation of the battery to the boot should be a problem aslong as it's be done well, and the battery is secure.
Hide the Apexi hand-controller and boost controller, and pray they don't find the ECU.
Exhaust noise could be another problem, just depends how loud it is.
Best of luck, nice looking ride.
Cheers
Paul