Super cool Rob! Probably feels like you added some horsepower.
Late to the party, I have some stuff that coulda helped you get it in the bed, albeit a road trip to Auburn….
I see your old axle has those aftermarket coil spring overloads. I put a set on my 1990 half ton back in the day, they were great.
If you aren’t reusing those or going air shocks like you mentioned, I have a basically new set of airbags under the BIG10 that came with it.
May require some mods on the axle mount as the 14bolt is larger diameter tubes. But if interested, let me know. I’ve used them exactly once now, yesterday, getting a load of beauty bark. Lol
But they will not be on the truck in the future when I lower it and with 4 other 1/2 & 3/4ton trucks in the driveway, no need for them. They won’t fit when lowered.