Kabli engine will cost you Rs.55,000 with exchange of old engine, but it is not advised. as Kabli engine may be already an overhauled one. so go for a full overhaul if you want to keep the car for some upcoming years. mechanic usually says Rs.30,000/- but if you go for genuine parts, and excellent work, you will be clocked at Rs.40,000/- if you are in Islamabad go to Babar mechanic in I-10 avoid Zaheer mechanic both are good and experience people, but zaheer is a thief.