Classy Chassis makes a nice aluminum utility bed that is specifically designed to carry a truck camper. It's pretty expensive but would be lighter than a steel bed and a TC would fit.
Most "off the shelf" utility beds won't fit a TC. You would have to have them modified. There are people on this site who have done just that. The sides don't typically leave room for the tie downs, the interior bed width doesn't widen out behind the wheel wells while most camper do. If you're going with a basement model camper they tend to be wider than 48" above the wheel well height which also creates a problem.
As for height, you would want to ask for a low profile bed, they have sides the same height as a regular truck bed. That will at least solve that issue.
Another way to go is a flat bed with tool boxes; that's what I have. You can install any size and number of tool boxes both above and below the flat bed, spacing them to allow the camper to fit.
