Re: F-650, what size bed?
Intercontinental Truck Bodies.
They make the finest, strongest, and lightest beds for beekeeping.
Their aluminum beds weigh as much as HALF of what some steel beds weigh.
All of that saved weight equals more hives you can carry. And when you chose to take the 26k route, every pound counts.
Unfortunatly, they do not have pictures of flat beds on their site but I'll bet they will email you some.
Many of their beds are in use in Oregon and we are very happy with them.
I have exactly ONE hive more than you.
That makes my opinion beyond question.