i had a fourtrak for a while, although they are rated to pull that kind of weight they dont realy like too. i used to put 2 ton regularly on a trailer and the fortrak struggled with it. you also have to think of the stopping abilaty. when you get that kind of weight pushing you, you want something that will stop you.
nissan patrol or landcruser every time for me if i was wanting to tow that kind of weight