@mustansir44
Parts of Khyber are really becoming hectic to find in Local market.
Don't look Shershah market FOR thermostat valve as firstly, the used one & secondly, the aging factor.
Metal part specially Spring parts have already become detiorated due to prior wet contact & then dry left over period with aging factor has finished metal life already.
Yes, other car's thermo valve can also be installed
Like in my previous Khyber, mechanic installed T-valve of Mehran 2016 model as it was easily available at Suzuki 3S.
It is also available yet at all Suzuki 3S with part number: 17600-85811, Price may be between Rs. 2,000 to Rs. 2,500
Just check dimensions which should be or at least near to 23 mm in Height with 44 mm Diameter(inner) and diameter of 36 mm(outer), Allied seal(Gaskit) should be included with it.
Local Mechanic will suggest you to try new Cultus or new swift T-valve with little mods but usually that gkit does not sit well in such jugaars in comparison with Mehran because they usually have height of 21 mm.
If you can afford, Better place order online and get reputed brand with Quality. You can check from here:
https://www.kmotorshop.com/en/article-detail/view/125273/thermostat-coolant-410183-82d-wahler-17600-85811-17670-50g00-17670-76a00
https://www.onlinecarparts.co.uk/car-brands/spare-parts-suzuki/swift-i-aa/4431/10195/thermostat.html?pg=2
https://partsouq.com/es/search/all?q=17600-85811