We just switched from an '06 F350 SRW 6.0 to an '08 3500 GMC DRW 6.6 LMM. Trailer
Last weighed was 12600lbs, 40' fiver. You can feel the difference in the dually. Our trip last weekend we had good cross winds and never felt the slightest push unlike we did with the SRW. I won't get into the performance difference as I discussed this in a previous thread. My preference is a dually and will never be without one. A dually is no wider than your mirrors, if your mirrors make it through so will the duallys. Good luck with your new truck.
