I could not find a complete docu. for myself on the web when I started - so here I am sharing the documentation of my DIY rebuild of a M96 996 3.6L (3-chain) engine - form removal of the engine form car, teardown to the rods, assembly & putting back into car, and which runs fantastic now.
Illustrations at hand of a few hundred images out of my photo-set which you can click to enlarge on the microsite as well.
I hope I can encourage sb. to do this work on your own too. It is absolutely doable (I have no automotive background , but I am scientist, mostly doing engineering in nanotechnology, and I am passioned about restoring old motorcycles and engines ), and if you love engines - you will enjoy this as I did (and bring the hated 996 back to life).
Link to docu:
snapshoot of the image set the docu. picks from...