Not SMB related, but here's what a F250 plow truck frame looks like after a fair number of years spent plowing in the NE.
I was at my mechanic's shop today and he's working on a putting a new frame on this pickup, and the old one was sitting outside. If the frame looks like this, I'm not sure what else from the truck was worth swapping, but I guess the drivetrain was good.
A was internet surfing and found a company that sold what they called PT kits to cut out sections of frame and repair. They also did frame restoration in house. Basically cut out the old, in with the new, convert rust, coat, and done.
2002 Chevy 3/4 ton Explorer Conversion Van with Quigley IFS.