Looks really good. Something to keep in mind to have done with my interior when the it's time.
So wucha got going for that vertical bit under the rear seat. I don't recall if you've addressed it yet.
I seem to recall a separate piece there on my '84 but it's been a couple years since I removed it.
Sic friatur crustulum
'84 GW with Nissan SD33T, early Chev NV4500, 300, narrowed Ford reverse 44, narrowed Ford 60, SOA/reversed shackle in fornt, lowered mount/flipped shackle in rear.