I did some research before I made the purchase and found a bunch of conflicting info regarding the truck and its capabilities... What I found interesting was that the axles under the '00 f250-450 SRW were all the same with the only difference between the f250/350 and the 450s were brakes and suspension... I can take the brakes(rotors and calipers) from a f450 and bolt them directly onto my truck.. Only requirement is need to have 17" rims to accommodate the bigger brake package. Once i do that and beef up the suspension I will basically have a SRW f450. I was able to confirm this thru forums, actual owners, and local shops who specialize in ford trucks, one of which specialize in building suspension packages for trucks that pull RVs... So yes you are correct in the fact the unit is right at the trucks legal limit in stock form... But once I do the upgrades and additions it will still be many thousands of dollars cheaper than buying a new truck. I could have bought a smaller trailer but there were none that my wife and I remotely liked.