I think the Bonneville looks so much better without a big windshield and or a passenger backrest. But, my wife loves to ride along so I just received and installed a Triumph grab rail mounting bracket and passenger back rest kit. I really didn’t like the looks so I cut 2 3/4” off the backrest mounting brackets. I think the height reduction improves the looks. the first picture is the original height backrest. The second and third pics are at the reduced height. What do you think