For comparison, a few 2021 Super Duty curb-to-curb numbers:

F250/F350 141” WB 4x2 - 49.1 feet
F250/F350 141” WB 4x4 - 47.6 feet

F250/F350 148” WB 4x2 - 51.1 feet
F250/F350 148 WB 4x4 - 49.5 feet

F250/F350 160” WB 4x2 - 54.7 feet
F250/F350 160” WB 4x4 - 53.0 feet

F250/F350 164” WB 4x2 - 56.0 feet
F250/F350 164 WB 4x4 - 54.3 feet

F250/F350 176” WB 4x2 - 59.6 feet
F250/F350 176” WB 4x4 - 57.8 feet

F450 176” WB 4x2 - 50.4 feet
F450 176” WB 4x4 - 50.4 feet


Looks like the F250 and F350 have the same radii, but there is a difference between 4x2 and 4x4.

The F450 has a big advantage over similarly sized F250/F350 models, and even a slight advantage over the 157/164 wheelbase F150s.

 

For comparison, some F150 wheelbase vs radius numbers (no difference between 4x2 and 4x4):

122 WB - 41.2 feet
141 WB - 46.4 feet
145 WB - 47.8 feet
157 WB - 51.1 feet
164 WB - 52.5 feet

So the F450 Crew Cab 8’ bed has a tighter radius than the Scab 8’ bed F150 or the Screw 6.5’ bed F150.

 

Same numbers in post #9...