Iowa Mold Tooling patented the floor structure of its Dominator II service body because the design controls body weight yet maintains structural integrity. It also allowed IMT to increase compartment size and increase the size of the workbench bumper with no increase in overall weight. New sidepack tops reduce the likelihood of rust and integrate rain eves over compartment doors. There's also a new electrical control panel. Estimated list price: $12,000 to $18,000.