I've been thinking about waiting to see if Honda releases the CR450F based quad but if that doesn't happen before summer I was thinking about getting a Z.

Was thumbing through Dirt Wheels and I always see the big bore kit they have in there and was wondering if anybody hadthis and how it's working out for them

 

There is a z400 site with forum on which a few have 440's and another has a 470. I would tell you the site, but it's a banned term here. PM username WP. He has quite a Z with the kit you speak of. WP, hope you don't mind me tellin people to talk atcha.