just thought i'd dig up an old thread. i started installing my clutch pedal today. make sure, if you order the stagea RS-FOUR S pedal and bracket, that you also get the spring and bolt that go with it. i didn't do this, but luckily i had an R33 clutch pedal and bracket lying around. these are almost identical units, except the R33 only has one top bolt hole, where as the stagea has 2 that line up with threads already installed in the firewall.
I also needed a 32mm (1 1/4") hole bit to cut out for the master cylinder. the hole is already cut into the acoustic padding, and there is a cast circle for where the hole goes. nissan did everything for this manual except put the bloody thing in the series 1...