I pull a 8.5X20 enclosed with 2 61" zrt's and all the other goodies.
Ram 2500, 5.7 Hemi pulls it fine. It's flat here no hills at all and the mpg is not good towing.
Have also pulled it a time or two with our 97 Chevy 1500. It will do it but it don't like it.
over 40 years old
20 years in business