I do have a solution, but there are no custom-fit bolt-on hitches for your 1956 Chevy Task Force. What you can use is the Curt Adjustable Trailer Hitch Receiver # C13701. This fits a variety of frame styles including box, C-channel, or I-beam. You will need to drill for a bolt-on installation or it can be welded-on if you decide to go that route instead. view full answer...