I have a Tacoma with this neck. I can remove the neck and take measurements if that helps in your quest. Interesting guitar. I doubt any acoustic provides this kind of access to the upper registers!
Hi Rick - if you can find the time to take the measurements, it would be a huge help. And some pix of the parts when the neck is off, so I get an idea of what's going on. How long are the bolts, what do they screw into, all that stuff.
Dave
Hi Dave - I took some pics w/ the neck off: https://www.noyage.com/tacoma_chief/
I'll take measurements later today. Looks like there was some kind of shim in there either from the factory or one of the previous owners. I play strictly fingerstyle so all that pick "mojo" was there when I got it