Opinions on what this car is worth

http://indianapolis.craigslist.org/cto/4598952870.html

local craigslist , thinking about trading 1999 Silverado for it , got about $3500 in the truck

Mostly looking for a nice duster to tubb

in my opinion.. if that is truly all original paint and the floors and the body is really rust free i'd say its worth between $4500-5500 maybe 6000. if the int wasn't trashed and it was a little closer to being road worthy then it would probably fetch 7k easily.