1- No comapny is offering 660cc car in Pakistan.
2- There are many good options Move, Mira, Mocco, N One, Days to name some.
3- No idea, but if JDM is only option then either buy from some reliable source or import yourself via some reliable person/firm like mycar.pk etc. Buying from unknown persons is a big risk as there are abused, repaired, repainted, rebuilt jdm flooded in market.