there are 3 per regulator 2 on the front and 1 on the back so 12 for 4 doors
the reason mine broke were because it was very hard to get the windows to wind down, and trying to force them broke the sliders. after lubing everything and still having them stick, i discovered that the problem was with the tracks the glass slides down - as the windows went down they were being squeezed by the soft track liner.
with the window all the way up ( obviously with door panel off) pull the track liner out of the track at the bottom - not all the way up, just part way up. the metal tracks were getting corroded part way up and were full of crap which was squeezing the liner tight which was stopping the glass going down. clean the crap out, i used a screwdriver, and then push the track liners back in place and you should be good. i just replaced the regulators with some from a wagon in a junkyard and havent got around to actually replacing the sliders. hope this helps
mark
View attachment 457728
View attachment 457730