940 rebuild... should I?

"Them 940s are about as easy to build as them 277s."
Yes but the 747's are more complex.
Boeing 747 - Wikipedia

Seriously though, the 904 and 727 are by far some of the easiest transmissions to rebuild. Only thing simpler would be a powerglide.

I think I'm resigned then to giving this a shot on my own then. It does appear that most agree with the fact that there's a high probability of me being able to do this without trashing it, so I'm game. Now I just have to find the right rebuild kit and shift kit.