I'm in the process, I going very slow
There are lots of little things that go with it.
If you were going to make it just for sleds and nothing more life would be easy. Mine will be multi purpose. I have a stowed away giant inverter, air compressor, and tool box.
The ramp is the most important. It will slide up between the frame rails but that width isn't wide enough. So it will have to be a custom expanding ramp. Then the length too. The fuel neck, breather, and sender are in the road to make it full length.
The goose neck was another trick cause it can't hang down into where the ramp slides either
I cares, want it to look fancy. It's already quite high just being on a f 350. It's all heavy steel, I don't need any unnecessary extra weight. It's about perfect height now for working off of. The expanding ramp will be nice too, I hope