Thank you for the compliment on my workshop. Believe me, it's nothing special other than I have a hidden sit-down toilet (next nearest one is 600 feet away).
I just picked up the transfer case in 2022 and transmission in 2023. The deals are still out there. I've found you just need to be on the lookout. Last summer I was also able to score a never used, still in the crate (NOS) kingpin Dana 60 for $250.
I created my new brackets using the original brackets from the NP200 as a guide. After clamping the transfer case frame assembly to my welding table, I plopped the NP205 onto the table and starting moving everything into place. From there, I prepared blueprints, ordered some plate A36, and started bending and drilling. I think the biggest plus is having access to an ironworker to bend the plate.
Attachment 3815