check india custom deptt website for latest rules, they have mentioned it all. They do allow import of self used vehicles in case you are going permanantly, closing RP.
btw, as others say, it's not wise to transfer altima, you can get same kindaa car in same price (used one) considering heavy duty paid at suctom and charges for changing LHD to RHD. However if you have someone known in customs, process may be quite easy.