ok here is the update.
I went to babar eco tech, the guy who worked on my liana a little time ago and I think he is good.
I broght him to my location to get my vehicle checked, he started the engine and said that its ring piston making this sound so your engine needs overhauling / replacing whatever you decide, but I recommend replacement!
I then asked him the price so he quoted me 23K (M15A Engine if i will provide mine, otherwise 28K) + 5K Labour + 2K for oiling etc and said whole job will be done in 2 days, and he will provide 2 months warranty of the engine and it would be Japaneses engine.
He also said that he won't replace the gearbox as it does not require replacement!
Now I want your advice here that is that all good or not?