i dont recommend an engine swap unless you are engine is running very badly and its time for it to go.
most ppl dont know jack about engine swaps here...and they are just throwing ideas from their back pocket. u can talk to levin as he knows it better than most.
if you want relatively better performance..go for good quality intake, header and a catback exhaust system. get a new suspension...lower your car a bit....get a new set of low pro tires and rims.
engine swaps are tricky in pakistan...u dont know the past history of the motor plus u cant afford to get a bad mechanic.