The reason I posted it (even though it concerns lahore), is that members from karachi would reply in that thread as well, and if you also ask for a seller in that thread, you are far likely to get a quicker response.The second reason was that that thread is named exactly as your thread and so your thread might be mistaken as a duplicate thread.
My intention was to get you a response as quick as possible.
Try contacting @HasanAnwer here on pakwheels, I think he or a friend of his were selling them, and they happen to be in Karachi