Can I use a [component] from a [transmission type] car on a [different transmission type] car?

Tread carefully on this one, as there are now additional differences between the automatic transmission and manual transmission cars to worry about.  Some components from some years will be interchangeable, but do double-check before buying.  Also see "Can I use a [component] from a [model year] on a [different year]?", above.  However, as 90% of the stuff is the same between M/T and A/T, the outlook should be viewed as hopeful.