Martsink,
Have you been following Ahsai's thread on rebuilding Cringely's engine? There is 13+pages of info there.
blown engine - Rennlist Discussion Forums.
The bore/taper issue is serious.And the equipment and techniques to measure it accurately are beyond what most engine builders would use. Rebuilding an M96 to Miata or Jaguar standards may produce a working engine but won't be optimal. I found it to be quite a 'learning experience'!
Your final problem will be how to reconnect all the vacuum lines ! Yes there are diagrams but
it ain't quite that simple. And that just about summarizes everything to do with the M96. It requires much higher standard of skill, tool, equipment and knowledge than I expected.