Bhai dekh kar engine chose karna. Recently someone on pakwheels did 3 engine swaps still he couldn't find a engine that was not burning oil. Pathano kee warranty kahna main tu warranty hai but you dont know how hard it gets to get them to replace engine or even pay for repair.
If you know someone took a compression gauge along. Mostly engines in market are now Singapore imported ones and these are more abused than Japanese and you need expert eyes to find the right one.