Hard to say, but you might go to E-Bay and look at what similar cars are bringing in. Look at your factory options and general solidness of the car. Solidness... might be a new word
Most folks will put in a different drivetrain and engine, so running condition will only help in its mobility at purchase time. Good luck and you might look at E-bay as a way to sell your car. More folks will be involved, from many different areas.