Sir i also do not know where to get the branded ones for your car in pakistan.
69-1013TS - K&N 69 Series Typhoon Kits, Performance Intake Kit
I think the above mentioned product can be bought from Dubai or malaysia easily. And it is for your car. Estimated 5.7 HP increase (which is insignificant at low revs). However since the car might breathe easy so might improve acceleration by a fraction.
Regarding plugs i do not know much (like how to match heat range etc).
I think since you verify all such addition very throughly so it might help us all too.