Hi folks, first time poster.
Had to chime in on this one. I had a 96 Dodge 1500 w/ a 5.9 V8 all the bolt ons, 12 mpg, lots of pinging under load, forget towing with it.
Traded it in for a 2001 2500 w/ the Cummins diesel, put a Banks Stinger kit on it, it will tow the freakin Queen Mary sideways up Rice Road in the summer with the A/C blazing and still get good mileage.
If you want a great tow vehicle, get a diesel.
My .02
CA Stu
(I get about 16-17 mpg around town, about 14 towing my 23 ft boat.)