@ragin_ravin, Im not sure about anything, but the people (website link) they only arange it for you, Any showroom dealer can also arrange it for you, Arranging includes the passports,
Im no dealer, nor have i ever imported a car, Im not sure what kinda 2-numberi is being worked out, But the only way to bring in a car into pakistan is thru,
Gift, T/R and PB
About making a NCP car legal, Im not at sure that "yeh ho b sakta hai ya nae," aur ager hosakta hai to kese.