727 (340) TRANSMISSION REBUILD QUESTIONS THREAD

This is where I am getting confused. I have an original OEM 1971 service manual, and it reads 4 front and 4 rear clutch discs for a 727 w/340.
That page is a little hard to read. I find it interesting that a 904 front clutch [for a 318] takes 4 discs and 4 plates. And how many years did your trans last behind a 340? Run it.