I have a tech that has been using a long bed regular cab with side mount toolboxes and regular toolbox. We need more room. Is a service body going to add alot of storage compartments compared to what I have now? What kind of percentage of more space do they have than what I have got? Or do I just try to add taller toolboxes? Here is a generic pic of what I have. I think my side mount are a little longer than the ones in the pic.