The mazspeed article is certainly very detailed...
I think I found a useable shortcut which is much simpler and provided me with good results. But if you have the special tools, the time, and the willingness to remove the gear box, then go for it.
The problem with that large nut that starts things off in my instructions is not that it is very tight, its just that its a very thin nut which makes it easy to round the corners off when trying to remove it....