Around 18000 Rs. If its overhauled nicely it will not trouble you for atleast 1 Lac KM and can run up to 1.50.
Mechanics in Rawalpindi.. On Tipu Road there is Rashid Autos they are good..
Near ChorChowk there is a guy named Riaz hes a young guy recently did engine of my friends 86 Corolla and we did 170 on that car on CNG good mechanic..
Then i know a guy hes MBA and Also Bsc Auto. He have a Shop near Airport Area in Fazal Town he have a educated approach to everything but he is expensive but famous..
I have tried these 3 people in Pindi they all are good and honest people and know there work very well.