I have hauled a gooseneck with a 1500 silverado with 3.73 axle ratio without any trouble for years. I am thinking of a new one with all the safety stuff. the 3.73 hasn't come out yet and will be rated for 12,600 lbs. I would never pull more than 6000 and usually 4500. the current trucks have 3.42 ratio and is rated for 9600 lbs but 40 more horsepower than I have now. I know it may be slower to accelerate but I think it will work as I'm not hauling as much as I used to. any thoughts?
I have an 2011 5.3 with 3.42 axle pulling 2 horse bumperpull probably 4500 lbs. The 6 speed is great and makes all the difference in the world. If you go with a gooseneck you can run out of payload on the truck quickly. The truck will pull it easily just maybe not legally.