Final removal note for people doing this job in future:

Once the TBA is off of the manifold, there is the matter of the data cable which runs off of it (and which is not removeable) through the firewall to the computer area.

The cable does disconnect on the far (computer area) end, and it has a hefty plastic plug on it. It is not clear visually whether or not one can get this through the firewall opening to remove the TBA from the car without disconnecting other cables.

I did successfully squeeze the head through the firewall without damage. You will have to unbolt (one bolt) the plastic wire loom/frame, which is in two pieces, that surrounds the several cables as they go through the F/W. Fully remove both pieces of the loom.

It may not look like you can move the other cables sufficiently as to allow the TBA cable head to go through, but I found you can get it done.

That's it!

The job took me many hours, but knowing what is detailed above, it could probably be done in 2-3 hours with the right types of tools. Without those tools, it may be impossible.

s/b