just wanted to share my experience..i have a liana 2012 rxi..car engine suddenly overheated due to bad thermostat valve..as tge heating went unnoticed it damaged engine head..i was worried that it was going to be an expensive treatment but guess what..iwent to Peshawar Shoba bazar and I swapped in a good m15a for 12k..they took the m13a for 6k..im driving a new car in terms of acceleration as m15a is faster than m13...engine runs very smoothly on factory fitted cng...
