Question On rebody? 1973 Z-28

[beater68427]

I found a 1973 Z-28 white tan interior 4spd 3:73 car very complete running driving all numbers match original paint original hurst shifter and space saver with fill bottle, original wheels everything is there, Problem is this thing is rusty very very rusty I can get the car in the 3500.00 range I think, but the only way I would do this I think is a rebody, I know of a real clean rust free tub I can get for 800.00. Whats your opinions on this and is a 73 Z worth the effort???