Not knowing any specific information about that Torrent of yours (year, naked roof, factory bars, after market rack?), I'll give you the default answer from Tepui and you should be able to go from there (in regards to fit): Tepui Tents are designed to fit on most vehicles with roof racks. The general rule of thumb is to make sure that your rack has a Dynamic Weight Capacity of at least the weight of the tent. This is the weight that the rack can physically carry while the vehicle is in motion. When the tent is in use, the weight of the tent plus the weight of it's occupants is effectively dispersed over the entire frame of the vehicle, as well as the tent hinge and ladder, also known as the Static Weight Capacity.
As for the mattress size, the tent has a floor size of 48" x 84" and includes a 2.5" foam mattress on the floor already. Most queen mattresses are 60" x 80" so you will face issues with the width.
Date published: 2018-06-16