Hi
Back again!
Right- I've eliminated all extraneous info.
On the drawing A = Gearbox, B = Engine Block.
Here's my point- if you draw a line 54mm from the block (representing the flywheel outer face)
that must leave 119mm on the left hand side of that line.
Since 85mm of that 119mm is the plain part of the shaft that MUST mean that the line drawn passes thru the 43mm splined section 34mm along the splined length.
This leaves 9mm of spline rightward of the line.
Therefore, either the end of the splines on the friction plate (flywheel side) end up at the end of the splines on the shaft or they overhang them (here I'm assuming the friction plate splines are roughly 1.25-1.5 inches in length)
I'd have expected Ford to so design the whole assembly so that the friction plate splines are located centrally on the input shaft ie with an equal amount of exposed shaft splines each end