My brother owns one. He tows a gooseneck 4 horse trailer around. He also has a flatbed gooseneck trailer that he hauls hay on. He has pulled about 11,000 lbs with it. The down fall on the '04 is not being able to turn off the overdrive (it only has tow / haul mode) He was disappointed with it until he got a Bullydog programmer. The tranny works so much better now! I pulled a 11,000 LB 5TH wheel camper with my 08 Mega Cab Hemi.
2013 Ram 2500 SLT Hemi / 2011 Durango Crew Lux Pentastar / 1968 Roadrunner 383 HP