The curb weight published and the weight at the scale on both my Wranglers were quite different! I just figured adding doors and a hardtop made the weight go up.
Seriously... know "real" weight NOT what somebody tells you or is read somewhere. It's quite easy to drive a rig to a local scale and find out how much it really weighs. Here's one of my scale results with less than half a tank of gas in my jeep without rear seat (see trailer axel weight).
Estimate 10gal of fuel to fill it up would be about 60lbs