Hello: If I remember correctly the windshield height is figured by mearsuring from the top of the windshield cut out that goes over the headlight. I only have experince with with an RSTD windshield. 17.5 inches was a good height for me at 5'7" tall. I ended up cutting my stock shield down. I too like looking over my windshield. But be careful, the more you cut off the more wind your passenger gets. I think I remember a trick, put something small on the ground 50' in front of your bike, look through the windshield and put a piece of tape on the windshield where you see item. Hope this helps. Are you close to any other RSV owners that might have custom shields?