If a 2000 TJ 4.0 manual with AC is 3300lbs, then I agree, I'm pretty close to 4k. But I believe they are closer to 3700lbs.
Lets add some accessories to that base weight:
Winch and plate 100lbs
35s vs 28.5s 150+lbs
Longarms and related accessories 100lbs
Skid and rocker protection 100lbs
NV4500 's NV3550 100lbs
Ford 8.8 vs d35 100lbs?
Tools 100lbs
Full doors 50lbs
That stuff there puts it at 4500lbs. Not sure if fuel is part of the curb weight, but if not, that's another 100ish pounds.