Sorry I guess I drove Fords Too long I get that 4.7 right next time.

Yeah, up to the 4.7. If you do get the 3.7, get the single cab. Quad with a 3.7 = waste of money(both in gas and power). Also, if you are thinking on "pimping" you ride with getto style 28" spinners, start kissing some mpg goodbye. I have the stock 20's and tops I get 15.5mpg. Also, it doesnt help that I put champion plugs platinum instead of the NGK.
If anything wait for the 2009 with the 4.0 engine. Since you are coming from a cummins (no pun intended) you will definetely hate the 3.7. Why the hell am I saying anything, go test drive it. I should've before I bought mine. Like Marv said, if I would have read the forums before I purchased mine, it would have been a 4.7 or HEMI.

+1 to eltupac and marv....if i had known how underpowered the v6 motor was, I would have just waited and bought a 4.7 or HEMI...But....the body of the 3.7L v6 isn't all that bad...its just the smaller engine cant add up to the immense amount of weight that the truck has...