I have all 3 . The small 2.7 has plenty of power. Gets better gas mileage than the other 2 . The 3.5 is a beast. Power delivery is tricky , the 5.0 has the smoothest power delivery. They all pull my 5000 lb tractor on trailer great. A friend of mine has the 3.5 and pulls big equipment with no troubles. I like the 10 speed over the older trans. Options.
