Thanks for all the replies!!I weighed the front axle, and rear axle of the truck I was pulling with, and then weighed the camper. Then later weighed just the truck and subtracted that out of the gross weight I had, and had just over 13K. I have a F350 with a 7.3l SRW. I was concerned it might be too small, but consensus seems that it will be fine. I didn't want to state what I had, as to avoid a possible bias. In addition, I have upgraded the tranny cooler to the 6.0l tranny, and run a scangauge 2 to monitor all my temps.