I have a 901 transmission, off a 69 911T, which is mating with a 2.4S engine and I have already installed the later 2 piece flywheel. To match, I have ordered a 72 225mm pressure plate/clutch combination. A similar 225mm plate/clutch is available for 70-71 models which have the 901 tranny, but at a higher price, which is why I chose the 72 version. 72 is the year the 915 transmission began. Is there a difference in clutch spline size between the 901/915 transmissions, if so I should probably get the 70 version. 69T has a 215mm clutch mated to a one piece flywheel.

Thanks,