Today, I tried a 2500 with the 6.0 and auto. I need some thoughts from owners...I presently have a Z71 with 5.3 and 3.73's and the 6.0 with 4.10's seemed perhaps from a short drive kind of sluggish. What kind of mileage are you guys getting ? towing vs. daily drive. I towed my rig with the 02' last year and although she seemed loaded...it did wring it out too bad.