Just flicking through EPC (v2.3) and noticed the vechicle security section. Saw these GEARLOCKs, the one pictured below id for a Calibra

GM P/N 91 156 859

Has anyone had this fitted to their car?

They fit other models, Astra, Omega, Vectra....the list goes on.
Its that I've all the trim out the front of my Calibra and this would be ideal time to fit one. I think it stops the long gearbar (in the cabin under the heater matrix) to spin, hence you can select gear. It would be a bastard for a theaf to nick the car or even diable this unit.