You should also check Ali Autos and another shop next to it, they sell second hand parts and will be able to source anything you want from Peshawar if needed. I can only direct to the shop in the following manner: If you are coming down Kashmir Road from the GPO side heading towards Marid Chowk, you take a left at the Kamran Market chowk and before the railway underpass, you take a slight left onto the service lane and the shops should be your left.