Still not sure what you are asking.
Use B3/corrado stuff, its all bolt in.
Use B4 pedals, B4 clutch master, B4 non ABS booster bracket. and a MK3 non ABS booster.
MK2 booster has clevis where it connects to the pedal. The B4 pedals use a ball and socket. Look up a few posts, there is a DIY how to make a changer it from ball to clevis.
ABS and non ABS brackets are different.