i have a 2015 spyder rs-s and am looking for a slip-on exhaust. no one seems to have one for a 2015 but think a 2013 or 2014 has the same fitment. someone reviewed the yoshimura and said the 2013 was a perfect fit on his 2014. revzilla said that two brothers lumps 2013 thru 2015 together and assumes the fitment is the same for all three years. anyone know for sure?