I have Z32 front brakes and kept the S14 MC. as long as they are bled properly and you use steel brake lines and not the ghetto fabbed stock brake lines, pedal feel is barely changed. Some people say a 17/16 inch MC makes it too stiff. I actually bought an auto MC from an S14 but have yet to install it.
thres a ton of threads about "what MC is good" and "what is the best pedal feel" on zilvia if you search. I recall they were pretty old threads so you might have to go back a ways.
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