That is some very handy information!
 
Toyota really did want to make it confusing didn't they! Well I am now running the smaller bore slave cylinder and to be honest I think it gives much better peddle feel than the larger bore and the clutch take up point is in a better position now. (not so close to the floor)
 
Thank you for the added information and hopefully this will help others as well when trying to work it all out.
 
Cheers