StreetMofo

Its a bit of a long shot, but I'm hoping someone may be able to help me, Completely new to the scene, I've just purchased my first Subaru Impreza! By the looks of it, it has an aftermarket immobiliser fitted! They key as you can see is fu%cked, it still works, but could do will a new housing, if thats possible! So, my questions are as follows- Is this an after market immobiliser ? if so, does anyone know the make, model of it & where I could get a new housing from ? Thanks Jason