We are looking for another Volvo, one with a 3rd row seat. Which wagon models were equipped with the 3rd row (Prior to 850 please)? I would really like to find a 145, but I've never seen them with a third row, but I read somewhere that Volvo has been equipping their wagons with 3rd row seats since 72'

 

I'm not sure about early, early models but I believe it was an option and can be added to any wagon in the 70's and 80's. So, you may want to get a car, then find a seat to install in it.