@shaidbokhari
You have to search used part's market for those vacuum pod's.
And
Khyber doesn't have auto choke.
Only one of them is called dashpot(it's purpose is to hold the accelerator for about 1-2 seconds when we leave the accelerator paddle to give smooth effect) rest are just vacuum pod's for AC idle up, Electrical load idle up, choke breaker, Distributor timing advance, secondary throttle.
For getting good fuel mileage it's necessary that all these components work smoothly and there are no leaks in them.