Never heard it called a grasshopper before, never seen a grasshopper trailer that I am aware of.
Are you talking from the ground or from the floor.
The ones I build are just under 84 inches tall at the highest point on the trailer, just over the galley. The inside at its highest point is 54 inches at the wall between the sleeping quarters and the galley.. Now that is with 35 inche tires on it, so deduct tire size from it. It is short enough tod several narrow shelf roads on the Kokopellie trail in Utah. But was at the limit in width on that trail also. My trailer is 80 inches wide at the edge of the fender, but the box is 51.5 inches wide at the top.