Where to turn for power?

I absolutely love my taco and even the engine until I try to tow anything!!!! Trying to run 65mph on the freeway with a mediocre trailer and a UTV on it is a joke. I can only think of doing a LS swap and if I do that, it's going to have some power 500hp flywheel type power or do I just spend the money on a pro-charger?? I've heard from people with the pro-charger claim that the towing improves 10x so I'm a little unsure on how I want to spend my hard earned dollars.... Has anyone done the pro-charger or turbo? What do you think is the most cost-effective? I'm near MOAB so I love some fun off-roading. Truck is definitely a daily driver as well.

 

Short Answer: A full-size truck.