Thats great George, thanks. I was going to rebuild this head, something I've done many times (Did my mates Z1R engine when we were just 18 years old....LONG time ago!). I actually really enjoy rebuilding engines, I also fitted a brand new head on my Isuzu Trooper, 3.0 Twin Cam 16 Valve Turbo Diesel..that was a huge bit of work!
I'm planning on keeping my Gtr for a while, it is a cracking bike, hard to believe its 26 years old next, not perfect but what bike ever is?