HITS, if you look at trucks, you want a rear axle ratio of 3.73 or 3.92. In my area, Chevy's rule. Everybody tows with them. I just got a nice used 3/4 ton for $11,000. I'm sure you could get away with a 1/2 ton towing an aluminum trailer, but it would have to be the fully tricked out engine, V8, Hemi, 4.7 liter or larger engine, etc. There's a good forum called horsetrailerworld.com that has some good truck guys on it. It's worth a look.