02 gsxr 600(?) tail on 04 gs500F
(http://www.gstwin.com/albums/member_bikes/atp.jpg)
and the write up, or what there is of it.
->link<- (http://www.gstwins.com/forum/viewtopic.php?t=12097&highlight=gsxr+tail)
btw-Srinath says that a cbr600f4i tail fits too.