My 4Runner is a 2008 with the 4.7L V8 which is no longer offered. :( My 24ft trailer (GVWR 5500#) hits the scale at 5000# loaded minus the food. It has factory tow package with a frame mounted hitch. I have no trouble with the "hills" in Maine and New Hampshire. Acceleration onto the interstates while towing is good, much better than my former, company owned, 4 cylinder Tacoma could do empty and not towing anything. I think the short distance from the rear axle to the hitch ball makes up for the short wheelbase. I have no stability issues with my Dual Cam WD hitch. I would NOT tow my current trailer with the V6 but the V6 may be ok with something around 3500#.
