I made a huckster out of Hudson Wagon Works plans. The company changed owners and the last I heard it was called Wagon Works. I don't think they sell plans but do construct the whole body as of recently.
Larry Lente, Lenteville bodies is still making the Huckster bodies for both 28-29 or 30-31. He is in Holland, Michigan. These are complete ready to mount or you can pay him extra and he will mount it. I had one and they are great. Dale Gosa.