[RichardJ]

>>The bed, cab, engine, hood, are all on right now. engine is complete, no fluids yet. (its all coming back apart for paint later, its just in mock up stage. There is no wood in the bed, wiring, or interior, or front wheel wells.<<

That actually says it all.

You're still a thousand lbs away from curb weight.
Loosening the suspension bolts needs to be done when it's completely back to finished weight. You'll need to recheck the length of that new driveshaft.