I doubt you are going to get a Qabli one easily. If you can.. Get iT! - Do not think twice. (I am still looking for one).
A good Qabli Gearbox might set you back Rs 10Ks; (If I had the dough.. I would have gone for a Cultus's one)
btw: You can also get your gearbox thoroughly inspected by a Gearbox guy; I cannot specify one.
They can replace damaged parts with suitable available ones.
Edit (by me):
OR.. if you are willing to spend a little bit more. Buy a brand new Cultus Gearbox. It will fit right in; although it might set you back about 20K rs BUT You'll have your money spent on something you can believe in.
The Qaqli ones are USED, right.. So; You cannot tell how long before they give up too! - The repair work again; they place second hand parts or third quality new ones AGAiN You cannot tell how long they would work OR even work at all Unless you do it with your own hands.
Getting a New Cultus Gearbox would be the best option.