What's it worth?

My wife and i bought a project and found out that it is more than we have time for right now. We have a 71 duster 318-3 speed car, needs rockers, lower quarters, and interior, the floor is kinda hacked by the shifter mount and it needs front floors. we bought a 318 for it, and an automatic tranny(not sure what it its at this point), ceramic headers. Also we have a later 70's parts car to go with it. it has space saver rear seat, ps, pb, air conditioning, console/buckets(although we didn't get seats with it). it has a sunroof also. i believe it was a /6 car. we are wanting to sell it but are unsure of what it is really worth. thanks for any info!