Car Rental at Nan Nakhon airport

Hi All,

I'm going to Nan province with a total of 5 people.

As we are going into the mountains we need a good powerful car with enough space.

Last time when i was in Chang Mai mountains i had a Nissan car with a VCT transmission which was horrible as it did not had enough power to get us up the mountains.

Unfortunately i can't find much information of which car rental companies are at Nan airport with suitable cars.

Does anybody has contact information for a respectable car rental company which has a Toyota Fortuner or something similar for rent.