Information for modifiers
Over all length of the 717.412 from the end of the tongue that sticks out from the back of the gear box to the mating surface at the bell housing is 51cm
The distance in from the end of the tongue (for the mount) to the surface of the output shaft on to which you mount a flex disc is 4cm
So distance from bell house mounting surface to flex disc mounting surface is 47cm
(Small print -
I've done my best with these measurements - they should be good within a few mm - use this information at your own peril!)