Ken,
I haven't had any trouble with bottoming out. You just have to plan ahead. I came up with the idea for an advertising tool for our Haunted house season. It started out to just be a shell that I could park at different gas stations, it turned out so nice that we finished the inside. I drive it almost anywhere, will only go 55 max. I usally hold it at 50 miles an hour to save the engine and try to avoid windy days. I had to add leaf springs in all 4 corners to help with the cornering.
I only paid $100 for the truck and only replaced leaf spring bushings & pins, tires, gas tank, wheel cylinder kits, wiring and a water pump. On the way to Green Bay I blew a fuel pump 1 mile from my fathers and nursed it there and changed it with an old 218 fuel pump that was on my first original 49 I had in 1980.
Old iron is a lot of fun and a thanks to the organizers of this site. Its fun to share stories with ones who care.
Todd B