I tried to look up your TT but could not find info. What is the weight and width?
I have been towing a 16' TT (7' wide) about 2700 lb with a Highlander V6. This engine is very similar in output to the 3.6L especially at 3000 rpm and above (my 3.5 isn't as torquey at 2000 rpm as the Pentastar, though). Although it has done the job, I would not want to tow more trailer than this. And I am pretty tired of 40 mph @4000 rpm up the long grades in the Rockies (but everyplace else it does well enough @ 60 mph... 65 is kind of pushing it though). So I'm actually looking at the 5.7 hemi right now.
One factor for me is the heavier transmission that comes with the 5.7 (or the diesel, for that matter). "Flooring it" to go faster up those grades has not been an option for me, because my tranny was getting too hot. I suspect the situation would be the same with the Pentastar.
