Harry,
In the early to mid 1990's, I shipped a NOS early BJ8 front shroud from my hometown, in Eastern Ohio, to the purchaser in Oregon. The father of one of my son's classmates was the manager of the local terminal for a trucking company, and told me that his company could handle the shipping, but I had to build a container. I spent a couple of evenings and a weekend day constructing a container to house the shroud for the trip. I recall using some sort of lumber (don't recall if it was 2 x 4's or not) to build a box frame, then attached the wood panels to the frame. The panels used were made out of what I call particle board. I used old newspaper, foam rubber, and styrofoam as the packing filler. Be sure and make the inside dimension of the box a few inches wider, longer and taller than the dimensions of the shroud. The terminal manager was very helpful in telling me what I needed, and actually came by the house to inspect what I was doing. I don't recall the timeline that it took to get it delivered, but I recall receiving payment from the purchaser along with a note indicating that the shroud arrived in its pristine shape, and complementing me on the construction of the container. In conclusion, my advice would be to take your time, be sure and make the container large enough for the shroud and its packing, and overbuild it a little.
On another note, regarding Andy's post, in 1990 or 1991 I picked up a front shroud to fit an early 3000 (roadster). At the time, my daily driver was a 1982 Rabbit Diesel, and the shroud was located in a suburb of Detroit, Michigan, approximately 250 miles from where I live. I made the return trip with the shroud facing backward, secured to the Rabbit's top. The irony was not lost on me that I was driving a Volkswagen with an oval rear window.
Jerry