Here's some more information that should help you. Unfinished trucks sell between $2500 - $10,000 depending on originality, completion, and condition. Without more information, we won't be able to pin point the value. We will need model, pictures, mechanical information and other info.

1956 RE-DO This should give you an idea of what they looked like new. This one has a six in it. Not completely original, but a nice example.

Options on the 1955 First Series Chevrolet Pickup

1955-'57 Chevrolet 1/2-ton Pickup Sorting the details of Chevy's stylish Second Series trucks

1955.2 (Second Series) Trucks -- Introducing the "Task Force" Series