Mike, welcome fellow Oregonian!
I have shocks on both of my rigs. When I first finished the huckster, I did not have shocks on it. So I went cheap and purchased a new aftermarket set from M&S. They are located in Hillsboro, OR. I think they are still around $500. Before getting them on my huckster being it is a heavy rig, it handles much better with them. I am not an expert on shocks, but the M&S shocks seem to work fine for me on the huckster. But I do not drive the rig more than 45 or 50 MPH and it is all stock, no two speed setup and they seem to give it stability for me. I also do not take the huckster on long cruises. So it is a parade car and a grandkid hauler around local. So guess my point is that the need for them is well expressed above and if they are not needed, Ford would not have put them on in the first place.