From Craig's site:
"Quicksilver brackets: Are different from the above line of fairings. [Windjammers were above] The Quicksilver was a smaller fairing, made mostly for 400cc sized bikes. But, each bracket was made specifically for a particular year and make motorcycle. There is no Interchangeability between bikes. To be safe, see the bracket on the bike you think you are buying it for.."
"All Windjammer/ Vindicator/ Kawasaki fairings were the essentially same... only the hardware was different for different bikes
Quicksilver Fairings used their own hardware, not the same as Windjammers All Quicksilver fairings were the essentially same... only the hardware was different"
I'm pretty sure you can find a Windjammer bracket for your bike if you wanted a bigger fairing. The dohc 750 mount was a little different angle than the earlier 750's. One of my dohc 750's had the earlier mount on it to begin with. The windshield angle was a little off, but it functioned fine. I was able to find the later bracket off of ebay.