Is the 09 int cam the same as the 08 int cam? If so can't I run this in a 06 and it is a upgrade over the 06 cam ?

Is the 09 int cam the same as the 08 int cam? If so can't I run this in a 06 and it is a upgrade over the 06 cam ? Yup, they are the same cam. And it will work with the Gen1 but you will to have mismatch either the cam gears or mounting bolts for the cams.

Great !! So I will have to put the gen 1 cam gear on the gen 3 cam ?

Great !! So I will have to put the gen 1 cam gear on the gen 3 cam ? Damn it... let me look. I believe I used the Gen1 sprocket and bolts. You can't use either the Gen3 bolts or Gen1 bolts because they hit the head when it is spun around. I know it was just posted on here also about that. Check out this thread also. http://zx-10r.net/forum/showthread.php?t=101466&highlight=cams