as stated before, what kind of trailer, how big, weight loaded,, I also would ask how much are you going to use it to tow and how much distance will you tow with it.
I tow with a 1992 Ford F350 dually with a 460 fi gas engine, it now has 203000 mile's on it and is in good mechanical shape, she's no powerhouse but it does what I bought it for, but I don't tow all the time, just the Classic Event's and to the local tracks a few time's a year, National Trail's, Norwalk and Pacemakers.