I'll claim ignorance if issues arise .... But there's kinda more to it ...
When I registered this truck back in 2018, I was able to get passenger car plates for it. It's 60 pounds under the limit in NY state for it. Oddly enough, most F150s have to get commercial tags. It really doesn't do much...
The flatbed is going to have a wooden floor. So at most I'd have to remove two boards. We made the bed itself so no crossmembers would be over the fuel pump.
The bed is currently off and it's getting a flatbed. Debating on throwing a fuel pump at it. The truck is 25 years old, it's been sitting for a year. Runs good now but ... that's one of those things that isn't going to be easy to replace sitting on the side of the road. Especially with how rusty...
I put 120,000 on the whiney 8.25 differential in my Jeep before I tore it apart to regear the Jeep. That always made a LOT of noise.
When we tore everything apart, nothing looked like it had 215,000 miles on it. It looked like a 50K mile differential. Pinion bearings felt nice, carrier...