New AF865 on a 2000 Dodge 2500, tie-down question

Grit dog, from what I understand, the AFs are heavier than almost any other TC of the same length. I expect it’s freshwater holding tank is bigger. From reading here, vintage TCs only hold about 20 gallons of water which leaves 30 to account for as well. Nope, I haven’t weighed one and don’t have one. Yeah, I said may because of that. Maybe only a few hundred lbs heavier ... maybe lighter. I guess he’ll find out how much after he weighs it.