@aly
The maintenance of Khyber is cheaper than Alto anyday...telling from my personal experience.The parts are easily available too.
As fas as price is concerned, in 300k you can max get a mint condtion 97 khyber,and if you are luck a 98 probabaly,But if you look for 99-00 model,non is below 350 in ISB-pindi.You can search PW and local showrooms.People here might say you can get 2000 limited edition in 300k in mint condtion but sadly thats just a false hope.This is a possibilty only on Forums,but not in reality.
Not discouraging you,neither exagerrating,i myself own Khyber and I know the prices,been through alot for the car.
So keep your goals simple,try getting 97-98 Khyber,local registered and in good condition in the budget bracket you are saying.
All the best for your find.Anything you want to know Im available.
Regards.