Try to stay away if possible.
Pakwheels cannot determine full condition on engine, they can tell you leaks if present, belts cracked, extra noises and thats pretty much it.
No Pakwheels will not inspect the car same day, you have to book an appointment and availability can vary
The main thing is if the engine number has been updated on the book/card with excise
Even then replaced engine means kabli used engine with no guarantee