Wow! This is a huge and complete strip down project!
I have an idea of your journey, I am in a restoration project too, but on my side the cab and motor stayed in place, even if we replaced all bushings.
Congratulations!
Jeff / 1984 F350 Crew Cab 4x4/5.8L w351 4V/ T18/ D50 4.10 front/ 8' bed.
Restored 2019-2022.
Nicknamed «Big Brother 1984», due to its soooo-looong shape & nod to George Orwell's 1984 famous novel.