You could look for any prewar/postwar ballooner frames (that catches your eye) and outfit it with the correct parts mix in order to fit you. While not ideal, it can be done with 1.) long seat-post and 2.) different stem setup. "Klunker" to me prompts an image of a broken down, heavy beater squeaking and wiggling sideways down the road losing parts as it goes. You may not want your bike to ride this way!? I suggest you watch for a more-common, heavy duty 26"-wheeled frame and fork with no damage or repairs and go from there.
@Autocycleplane has many examples of fitting his frames to ride properly and sets a great example of how to do it.