Here is it is lowered down on the truck. We secured it to the chassis by making our own u-bolts using big all thread and 3/16 flat bar.
It looks funny because of the height being lower then the cab. But to clear the in-motion dish and A/C on the roof we had to keep it about 11" lower then the cab to be safe. Next off season I am going to fiberglass some roof caps that will extend the appearance of the roof to match the height of the rid on the outside edges.