Tata Motors — GPS navigation system in tata zest xt

Address: 586101

I'm a owner of tata zest xt with regards no ka28n7907; this vehicle do not possess the gps navigation. Zest xt is the tat motor premium flagship vehicle. All lower version have the provision of gps facility. Kindly provide the gps add on facility to my car, i'm ready to pay additional amount. My car is still in company warranty period. Kindly do the needful