yes, you can... but only if your engine was runing 2.5cc, then posibble, but you will need vanos engine wiring, vanos bosch #413 non ews dme, both the cams, vanos unit, valve and solenoid and piping, some grinding on the front of the head, etc
But with all this, better off buying a original 2.5cc with vanos.. cheaper in the end...