I have a lot of pictures and literature of grain bodies with cattle racks. Nearly the same thing except the lower 40" is solid.
See STAKE BODY post of a couple of days ago. I listed a supplier of body parts for stake posts, etc that you can use. Most of the bodies were steel posts by 58' so it would be pretty authentic looking if you have oak slats made. You can rivet them or use carriage bolts and recess the nuts & washers. The gate is easily made from formed channel and a loose fitting slide frame with a rope and pulley. E-mail me and I'll try to send you some pictures.
