Yes about 2.5” on the cabover and 1.25 over the antennas. Maybe if I lived out west with off road camping I would add a 3/4” stall mat. Even though I doubt it would be a problem with frame flex. The new 250’s frame is very stout and flex would be at a minimum.
These Superduty trucks have tall cabs for sure. If you're looking for something used, be sure to check the measurements. Don't be like me. I had a bad experience loading an old Palomino B-1500 before I knew better. My new Grandby should be ready in November. It is being built to fit my F-250. Thanks for posting the info on your rig. I bet that 7.3 really flattens the hills.