Need help pricing a re-painted 1983 Porsche SC.

[tylerdred]

1983 Porsche SC 3.0 coupe appears to be repainted from factory guards red to black. All black leather interior. The paint job was done well with just a small area of overspray under the hood. The car has 138k miles and aside from a few upgrade (WEVO short shifter, carrera chain tensioners) is otherwise stock and mechanically sound. No accident history on carfax. No rust. Any pricing help would be appreciated.