For Rawalpindi you can find the dash in Sultan ka khu. Rear bani. Murree road. You'll get all sorts of parts from there. Most jdm from a half cut or stolen cars. But they're in great condition. Negotiate the price a little and you're done with it.
I dont personally think any ek parts needs to be imported because we have everything available over here.
If not in the khu then ask for what you need in either baau mohalla near nankiyari bazar or Mithu dahata. (They have similar names if i am pronouncing them wrong.) Anyone can guide you to these places.
If not, then visit either Hpr for import parts