[Mrmerlin]

you dont need a throwout bearing unless its making a grinding noise with your foot off the pedal.
As previously posted you have an updated clutch master cylinder and the new piston inside the part is too long have the old MC opened and then swap the pistons and put the seal from the new piston onto the old piston measure the spring so you dont put a longer spring in as it will soon shatter due to being over compressed IE too many spring wiinds