Bro . thanks for the reply. I did went to Montgomery road and did hell of searching. Well, there new seat belts were of 2 types. 1 manual which was around 350 ( useless).Other one so called Automatic was of 1200-1400 ( pathetic quality). both chinese.
But i talked to a shopkeeper and he said he can arrange for one from bilal gunj in 1800 with fitting , i finalised it at 1500. its of toyota corolla orginal japan and works grt.
Its much better option.