Transmission install

It's been about 5 years since I replaced my 40 with an 80.  I don't remember off hand, but I believe if you look at the back of the engine, it will be pretty clear which require bolts and which are pins.  It only worked one way if I recall.  You just want to figure it out before you muscle it in.  Even though the case is aluminum, my back did NOT like the effort to get it place.  Removing the exhaust pipes, etc. and an extra set of hands are really helpful.