I had heard many times before from friends who had drivers backrest, just how comfortable they were. I finally pulled the trigger and after lots of homework purchased the Mustang.After spending two long days riding with this, I am beyond sold. The level of comfort this ads is really amazing. In installed on a 2013 Street Glide which I consider to be a comfortable bike to begin with. This takes it up several notches.The quality, fit, and feel are also superb. It mat..