Listen to 87pathy. And believe me when i say that removing the trans on a stock suspension wd21 is a PITA. You gotta lower the front diff and remove the tbars.
On an r50 it should be pretty easy though cause there are none. And yes go with a stock clutch I know people that have well over 500k on the original nissan clutch.
Well that's pretty dang interesting....I'll first state that yes I DO know how to use a clutch....but I am original owner of a '97 SE and I replaced original clutch in 2003 at 70K miles....put the next one in about 40K miles later in fall of 2007....zoiks! Both done at dealer...I'm thinking if it fails again I should do it myself.