23, all 3 of my cars have been manuals.
'90 Ranger - I beat on this like no else, never had any problems with tranny.
84' Sunbird, no problems with the 4 speed, but it dumped all its oil and then blew up.
99' SVT, no problems with tranny other than the usual notchiness when cold. Wrecked and totalled due to moronic old lady

. Now I'm driving my dad's pimptastic 94 Voyager until I find something.