I agree, 4.56 gear will make a world of difference with 20" wheels.
I also have a weight distribution hitch from Curt. Makes towing much nicer and safer.

I have this one http://www.summitracing.com/parts/cht-17302/overview/

I won't tow without it.



I would also recommend factory tow mirrors if you don't have them.



Tow mirrors in the tow position