If the body is sound thats a major part of the battle. Large amounts of $$$ can be sucked up with body and paint work. You already have the motor and trans, need a rear end to match, maybe some brake work, wheels, etc. If you can do the work yourself maybe another $ 5,000 ?? Interiors can run from cheap to ridiculously expensive for custom stuff. Maybe plan the work in phases - get it safe and on the road, then pretty it up
