What about using 200x forks. I read in the interview section on another site with Brett Drisscol that he used 200x forks on his factory Tri-Z because they where better than the stock Z forks. This was on the first gen Z.
if you read that article closely you'll take notice that he states he used 200x fork from one of honda's racers.. i have a feeling those forks were not from a stock 200x. and actually, the stock 200x fork is smaller diameter than the stock 1st gen Z.