OK, read this whole thing from front to back only to find out you haven't fired it up yet
I have an 85 FJ60 that looks a whole lot like this rig. I really like white with the grey interior.
99% of people would not have had 1) the vision to see a diamond in the rough and 2) the OCD required to bring her back to life slowly and meticulously -- well done (I'm a mechanical engineer by trade, so to see how thorough you've been is awesome).
Gratuitous pic of my rig in the same color...
View attachment 1588474
View attachment 1588475
You can't see from the pic, but the gear shift goes 1-5 speed (have an H55 hiding under the tunnel)