Pulled the cream guitar down this evening and took a trip down memory lane...
Life before routers. Ouch.

I think my brother did this with a screwdriver.
At least I got these dowels correct... sort of. Then the real work started.
I decided I'd try and save the fingerboard, because rosewood is now covered by CITES and I'll never see any otherwise.
It came off pretty easily, but it was a little bend afterwards. So I'm flattening it out.
Unfortunately, the trussrod was not what I was hoping for. It's a weird, huge aluminium thing. This neck was always known for being a little bit flexy and now I can see why. I was wanting to use this truss rod in a short scale bass for my son, but I really don't think that's a good idea now.
@Bruce Johnson I'd love to hear your thoughts on this thing. Is it usable or should I run away fast?
My other problem is that the rod has left a HUGE slot in the neck near where I was hoping to use it for the dot graft. I could fill the slot and re-route it, but that is feeling like hard work.
The other weird thing is the laminations in this neck.
I don't know if you can see the line, but it's around 1/4" off the centre line. Just why they thought this was a good idea is beyond me. I guess on the upside, it's not actually warped. It just wasn't stiff enough.
All in all, while I'm slightly disappointed by what I found inside, I'd call it a victory. The board came off very easily and is more than usable for another guitar in the future. I've also learned a new skill. Which was kind of the point with this project anyway. I'm in two minds about putting the dot on the bench and pulling the board off that now. I'll keep thinking about it. If anyone has any wisdom about that trussrod, please speak up. Love to know more about it.