I am lost now.. how will your vehicle retain its value when you will swap a 1kd in place of a 1kd ? Engine number will be changed on the registration book and your vehicle will come in category of vehicles which have swapped engines..
Hence it will loose its resale as you feard.
This is what I am trying to say from day 1 and No one seems to be getting it.
IF YOU WANT TO SWAP THEN SWAP IN PETROL ENGINE. OTHER WISE REBUILD YOUR CURRENT ENGINE.
The diesel prados in Pakistan are Uk imports and they already have less Resale and suffer from low demand in market because of these being diesel.