Welcome to the site. You'll have to provide a lot more information to get any kind of accurate answer.
With what you've given us to go on though I'd say somewhere between $1,000 and $30,000. So I guess that's an average of about $15,500.
Seriously, Does it need rust repair or just sanded and shot?
Are you going to do any of the work yourself?
Are you going to paint the trunk, engine comp, underbelly, etc?
There are many variables.
Sorry about the long response time, I'm currently deployed so the internet is first-come, first-serve. The charger has been sanded by hand, glass beat, and primed at least twice. The owner before me had restored the body. I will leave the painting to the shop. I want to paint the entire body frame, inside and out.
My reason for doing so is because I want the original color on the car.