My '70 cuda is about 3600# w/o driver. It's a tank.
The only weight reduction is aluminum wheels, Aerospace front disc brakes, a fiberglass hood (a heavy bolt on), and I removed the heater box.
ALL factory interior is in place, nothing cut out, and it has a 10 point cage.
Manual steering and brakes, 727 trans, Dana on leaf springs, and an all aluminum hemi (weighs the same as an iron block aluminum head 440).