Doesn't the screen mount on the original brackets? To change the attack angle, did you need any other hardware or does it adjust the same way as the stock screen?
Yes, it does, and you can move it up or down using the same 3 positions the stock one uses. It's just that neither of those really worked for me, it was giving me more buffeting with the increased protection.
it may have not been obvious from the previous picture, but compare the screen angle to that of a stock screen.
Here is a better picture that shows the spacers in the lower mounts:
They are roughly 12mm long, made using a washer, nut, (2) thick plastic washers and another washer/nut to keep it all in place as you install the windscreen. Because of the longer bolts needed and change in angle, it takes some finesse to align all the bolts to the original holes.
As Brock mentions, the screen is thinner than stock, and it will crack around the mounting holes if you over tighten it.