70 Duster - Value ?

I owned this 70 Duster, and sold it. -- I'm now considering buying it back. -- It's basically a, completely rust free, Survivor, Car from Arizona -- The hood is a little bleached out, from the sun -- 318 -- auto -- disc brakes (front) -- working A/C -- power steering -- very good, bench seat, interior. -- The added items include -- intake, and 4 bbl. Holly -- Mopar Performance valve covers -- dual exhausts (no headers) -- shark tooth grill -- Cragars -- 8-3/4" non-posi. rear. -- What should I pay ? -- Opinions. --