Probably not a lot, I'd try Ebay for $50 and see what happens. They put much more load on the original screen's mounting screws and can disconnect from the bike at speed if mounting system is not upgraded. Also if I remember right they need bar end mirrors, screen interferes with the stock mirrors. Thats the parabellum on my avatar, replaced it with an Aeroflow after it flew off my bike on I70 and got crunched by a semi.
