Maintenance truck question

[jslawn]

So you'll think that the 5.4l should be able to pull what i'm needing it too. Like i said before i will be mostly pulling a 16 ft trailer with 2 walk behinds and maybe a zero turn later. I do landscape work also and tree work and i want to be able to have a full loaded trailer and have the power to pull it. The biggest load i've pulled with my truck i had 4 hvac units on the trailer that i striped to take to recycler, my truck seemed to pull it fine (5.4l) until i got to a hill and was very slow up the incline. Does the 3v 5.4 have more pulling power then 2v? is it noticeable?