Everywhere on the internet this engine is mentioned as 1339! But in Pakistan we are discussing 1298, don't know why. Chassis plate (tikli) needs be checked, or the small part of someone's registration.
About 4-seater and 5-seater, initially I thought it is written on the receipt of the car, which goes into return file. Somebody could check. But if you write greater seating capacity, there is more tax.
E.g Suzuki Bolan has 8 seats (1 driver + 7 passengers). Suzuki Liana has 5 seats (5 seat belts). Suzuki Ravi can be bought for cargo (2 seats) or people carrier (10 seats). But greater seating capacity means more tax, so people write 4 seats for Bolan also, and then when they sit more than 4 people, there is traffic challan due to overloading!