BUYING A VEHICLE IN ZAMBIA

Hello all

I am moving to Zambia soon for 4years minimum - I have a car in South Africa - am I allowed to drive it accross and for how long can I use it there?  Alternatively I will need to buy a car in Zambia. Please can someone give me some reliable information on buying a new car in Zambia.  Have done some reading and have to use an agent to import from Durban.  Any recommendations if someone has done this recently?

Much appreciated.