Well then, it can be done. I'm not actually sure if it saves labor time if you don't have aftermarket bumpers to remove but it would be the way to go if you also wanted to rust proof or address anything else on the frame.
2005 E350 RB 6.0 PSD for extended fun
1989 Landcruiser FJ62 for local fun
2011 VW TDI Golf for hwy fun
My interior is rather elaborate and without destroying it we decided to pull the motor from the front.
But if the van was gutted, I would have gladly pulled the body off... which would have led to even more stuff/work lol
But the 7.3 is overall easy to work on in place, obviously some components aren't so and that's when you pull body off or motor out and get EVERYTHING DONE.
2001 E350 PSD w/ a bunch of stuff.
And had three other E350s...