JDMs engines are 100 RON tuned, from where you will bring fuel? On Pakistani fuels most of JDMs engines would not last long
Body parts, bumpers, fenders, grills, lights, etc would be problem to source if need replacement in case of an accident
The JDM's in Mehran's price range are mostly 660c which are mostly street patrol, delivery cars in Japan not meant for highway driving
In 1000cc segments JDMs are above one million rs mark
That's why people chose Mehran