Links to Z32 Technical Resources - please PM me if any links become dead and I'll edit my posts.
PDF Service Manual - http://www.importworkshop.com/nissan-fairlady-z.html
Online Service Manual - http://www.300zx-twinturbo.com/cgi-bin/manual.cgi
Courtesy Parts - http://www.courtesyparts.com/300zx-part ... c-882.html
Australian 300ZX Owner's Club Technical Library - http://tech.aus300zx.com
TTNet Tech Library - http://www.twinturbo.net/ttnettech/tech.aspx
TTZs Of Dallas Tech - http://www.ttzd.com/tech/twinpoptech.html
Z Car Club Z32 How To's - http://www.zhome.com/ZCMnL/90HowTo.htm
Robo's TT Info - http://s95014253.onlinehome.us/63104/index.html
TT XTZ Tech Index - http://www.ttxtz.com/tech.html (mostly just a list of links to the above 4, but organised into groups so easier to navigate)
Z32 Photo Guide - http://www.z32photoguide.com/
There's more around, but 95% of stuff you'll ever want to do will probably be in here someplace