I've looked at a number of pictures and it seems there is only a small seal in there so i'm thinking that if i removed the c-clip from the top and unscrew it with the front suspension hanging nothing will leak out. any ideas?
edit: It also seems that jbswear is thinking about the rebound adjuster, i'm trying to replace the spring preload nut (the big blue one on the top of the fork).
Well, seeing how this is an SV tech forum, not a GSXR forum, its not surprising no one has the answer. The percentage of people who swap front ends is pretty small. Maybe you should search around one of the Gixxer forums.