I am looking at a 2015 V7II racer, but like most folks it seems am not sure about those racing numbers on a non-racing bike. But I like the chrome tank, and I like having a seat cowling and windscreen. I know various options are available for windscreen replacement (including Dart screens). But I am wondering if it is possible to replace them on the 2015 Racer with the cowling and/or screen from the 2016 V7II or the 2017 V7III...? Anyone know if there is any interchangeability between the years, and if so how available those parts are..? Thanks.