whats it worth? 71 rs z28

[ZL1.FUN]

Hey everyone I'm not usually a big fan of these post because it depends on a lot of things. But I need your help. 1971 rs z28 has all papers it is the real deal. Auto trans body is very nice no holes could do with paint job it's 20 years old been sitting in a barn. The inside is ok but could do with new carpet and good clean. No panels have ever been cut, now the big part it's missing the original engine it has a 454 cam,holley carb the usual, any help would be great to guide me in the right ball park.