For real towing I would go diesel bc of the torque. Personally I think they are better in hot weather towing to, but that's just my opinion.
I have a 2500HD Dmax and it tows my 24' boat easily, of course a gas engine would also. One thing I notice is the 6.5' bed tends to move around some if I get passed, or it's windy. I had the same truck with 8' bed truck and it tracked much better in the above conditions.


CH3NO2