Im just about to buy a 1994 nissan patrol that is on LPG, the LPG tank is under the car. There isnt the 3rd row of seating in the car at the moment but I have the seat to go in as soon as we pick it up. There is a mod plate on the car for change to 5 seats so i know that i have to get a new plate to go back to 7 seats. when talking to my dad he said that it was strange that they put a mod plate on to take out the back seats and said that maybe i cant have the 3rd row of seats in because of the tank, I was just wondering if any of you had this same problem or know or anyone that has.