I think 509 is saying plan on another 20K to finish it, which I would say is a pretty safe guess. The value of these cars is all over the map, with that being said BB 2nd gens are actually pretty rare ( 1533 built in 71 ) and if this is a #'s matching car I would finish it as a correct stock car because it will likely bring the highest price that way. Go to
www.nastyz/28.com and due some research.