1967 dart gt slant six value

Don't blame you for wanting a 67/69 Dart. One of the best looking A bodies ever. That said, with the rust free requirement and budget, 73/76 slant 6 2 door Dart/Scamp's would be more available in your range. Good luck. It may take some time to find the right one, but it will sure be fun when you find it. :)