I am located in Tacoma, WA. I recently put in a new voltage regulator, so now I am in the process of replacing all of the 42/43 year old wires that are now getting a more concentrated and amplified current than they had leaving the factory. So I am meeting with my mechanic today to discuss placing a complete new wiring harness in the car if needed.
If I were to sell it today, I would take 13,00.00 or in that area (given that I need the Tachometer rebuilt) .
If I go ahead and finish upgrading the wiring harness, chrome out some engine parts, have the original clock restored as well as the original tach rebuilt; I would be looking at the 17,00.00 OBO range. KBB for an original in excellent condition is around 16,750.00. However, my car is in almost perfect original condition, but has modern electrical system and upgrades.
I can answer any other questions. I am at the point of committing about 3 to 4 thousand more in the car to make it a perfectly upgraded, yet retaining the basics; or just selling it as I hardly drive it. I don't work, have no kids and my wife and I have two other cars. So it gets used on sunny days and stays covered on others.