I have looked into this and heard different things.
The issue I have with rebuilding an auto is it often time needs special tools and what not that can be hard to fab up on your own. I have rebuilt and made tools for several manuals, but never an auto.
I called around to several local shops, and they all stated that the a40f is a poor casting and often time the bearings won't press in and out well and priced me 1600 for a 100% new trans, with new housing. Weather this is true or not i don't know.
Enjoy!
