why don't you just cut down the one you have on the bike to the height that you want
it is VERY EASY to do, and you can even put a factory looking edge back on it after cutting it down.
1) decide how far down you want to cut it
2) use a piece of cardbord to trace out the curve at the top of the shield
3) put painters tape on the windshield to protect it
4) place the template down on the windshield where you want to cut it
5) use a sharpie to trace the curve onto the windshield
6) use a saber saw with a metal blade in it to cut the shield
7) use some 180 grit sandpaper and block to sand down the edge smooth
use 600 grit emory cloth to sand the edge smoother .... this will be so fine that it will turn the edge of the shield back, just like it was from the factory ......
very easy to do this .... I've done this to 3 shields in the past, no problems