The LEP will see the replacement of most of the tanks electronics , including its sighting systems .
The LEP does not envisage a major upgrade of the vehicle 's drive systems or replacement of the 120 mm L30A1 rifled gun .
The LEP will see the replacement of most of the tanks electronics , including its sighting systems but does not envisage a major upgrade of the vehicle 's drive systems or replacement of the 120 mm L30A1 rifled gun .