I know it so well. As I say to my mates, turbo Nissans are reliable cars until you start messing with them. They then become "somewhat unpredictable" as regards reliability.
A lot of the reason I chose my Z over the other cars I was considering (S15 Silvia, B10 Alpina amongst others) was the simple fact that it was newer and less likely to go wrong. Its been a long time since Ive had a car that I get into knowing that Im going to get to my destination without oily fingers (and oily fingerprints all over the bonnet)
I go to Le Mans every year and will take the Z this year - first time Ill be able to participate in the burnouts, rather than just watch and say "If only I had my Nissan here .........."
One of my ambitions is to do a tour of Europe (and its tunnels) I would desperately like to do it in the King of GT cars but even with a rebuild and all the majors taken care of I'd still be whispering sweet nothings to the old girl. I'd love to do Le Mans as well, maybe be 2008 - Its not far really (lol)