i was doin the brake swap today and i cant figure out the master cylinder… the Z one looks completely diff from the 240… the plugs and holes are all different… anyone whos swapped them or know whats involved… i need help! thanks heh 
Are you doing Z32 Rears too?
If not I would suggest not using the Z32 MC unless you plan on getting a
Brake Bias Controller. With the Z32 master I found that the car was way
to rear brake bias happy on stock rear calipers and I would Roast my
rear brakes at the track. When I say roast I mean finish a new set of
pads and warp the rotors. I stuck the S13 MC on and it was like a 50/50 Bias.
I like the Stock MC better than the Z32 MC with Stock Rear Calipers.
yah i think i read about something like that happening as well. i was thinking about doing the rears but dont know if its really worthwhile.
If you want to be a ballar and do it go ahead and do it, but just get a good set of rotors and pads and you will be fine.