I've been working & trying to make progress. Seems there's not much to 'show' vs. the effort & time
It was only temporary, but it's progress regardless. The bed dropped over & onto the rails w/o issue. It allowed me to get the rear bed positioning validated 100% as well as verify there were no unforeseen issues. The body lines looked good & clearances under the cross-sills looked right. I have a couple of tweaks to make that I was expecting so all in all I'm happy. Special 'Thanks' to my good friend Jeremie & his boys (No.1 & No.2) for their company & assistance! It's good to have great people in your life!
The truck is mocked up @ ride height in the pics (4.5" @ the front cab mount; 5" @ the rear cab mount; hub C/L @ approx. 15"):