Best advice..... Forget about market value. Enjoy your car. Drive it like you stole it. Take it to a track and get a permanent smile plastered on your face. Modify it until it's exactly what you want. When you are all done and can't or won't drive it anymore.....then sell it. It's value will depend on how close it is to someone else's dream car. There is no prescribed value, having a Kirkham is a good start.