I Have looked at a 68 rs ss, does not have original engine ,350 car, but is suppose to have everything else oringinal, power steering, power windows, a/c,tilt body is needs a drivers 1/4 and has 1 quarter size surface rust on 1 fender, floor pans are good, it needs all door panels, console, and of course a new top, can someone tell me if this car is worth 15k