Unless you're hauling a load, you'll find that the 3500 is a very stiff ride. It'll give you some jolts. The only difference between the 2500 and the 3500 is the springs. If you find that it's too stiff, you can probably take out a spring leaf and you'll have a 3/4 ton ride.
This is an early '07. At mid year, they switched to the 6.7 with all the pollution crap. It's also an excellent engine but you have to play the EPA game.
My 3500 long bed rides better than my 2500 short bed.
