Zippy-
I don't want to sell it, but I did put the Givi wingrack system on my '96 Sprint and think it is great. You will need the N140 Wingrack (standard for monokey cases) and a specific fitment kit (Y665 if it is for a pre '99 Sprint). I found mine on e-bay for a great deal. There is currently an N140 on e-bay with a fitment kit for a Zuk for $100 (half price from new but you can probably do better) but you would still need the fitment kti. An interesting side note, I have been watching ebay for a top box for a while now and cases usually go for more than retail. I don't know how to explain that. Happy Trails in Boise has good prices on hard cases.
Good luck!
http://happy-trail.com/