I have a 1990 Mk2 GT coupe that i want to give a little more braking power to, I believe that later models and turbo's have larger discs and calipers, so my questions are.

.

.Do these lager discs and calipers fit as a direct replacement i.e can I just buy the larger items and fit them direct without having to modify anything

? and the second question is

, Will this mod make a very noticeable difference? Oh just thought of a third question, My car does not have ABS does this present any problems with fitting later calipers and what has to be done to fit ABS capability to my car?