What transmissions fit in the 1996 Lincoln town car?

I want to put a semiautomatic transmission in my Lincoln, or just a manual. What transmissions will fit in it? Thanks.|||You could get a 5-speed from a Mustang with the same engine. The only problem is, no Town car ever came with a stick, so you will have to cobble up a clutch pedal for it.|||1, its's the aode transmission