Time for an update.
For the last month or so I've been gathering parts and getting the truck ready for modification. I'm starting at the rear and will be working forward. The changes from the cab rearward will be a 31 gallon fuel tank, 73+ rear suspension and the 14 bolt rear axle.
First task was to remove the bed. I built a head frame and used a cheap 2000lb chain hoist to lift the bed and drive the truck out from under it. Then it was set down onto my trailer.
Truck back in the garage. Much easier to work on without the bed.