realistic price for 70 Z-28

[70CitrusZ]

Anyone with knowlege of these cars care to comment on what is a fair price for a body off restored NOM 70 Z-28 t400 car with docs?

Complete as orig.,with all pollution stuff, heads,manifolds,alt orig,some orig eng parts rest are correct casting numbers, close dates etc., with the exception of exhaust from the manifolds back is flowmaster system with the transverse muffler, and goodyear radials.
z-21, vf3, c50, citrus with blk std. int. blk stripes (as orig equipped)

There is such a wide range of prices its hard to say what is realistic without giving it away.