There was once a story about those load levelers on that travel trailer. The story was they hooked up a set on a Tornado (front wheel drive) and took the rear wheels off to prove their strength. I don't know about that but they actually did work pretty good with all four wheels on the ground.
@Moriarity , I’m beginning to think your addiction ( need that is) to quad headlight customs was caused by you looking at pictures like this one. Of course I could be wrong.