Need help pricing a re-painted 1983 Porsche SC.
 

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.
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