I also was thinking about just building my old heads up with some Jim wolfs new valves and guides but sadly money is a issue,my other baby( my three yr old) is a pretty expensive toy too! Lol... I'm sitting on 4 brand new 740cc nismos from one of my buddys sr20det sentra Mabey I'll buy two more and swap them out then. Well got some options to think about Thanks again and man it feels soo good to be back in my Z how I have missed her!