The prop thats on it now is a 15.21 i believe and the leading edges are rough,not bad just rough and as a perfectionist at times i wanted to ask before i sent it to impros if i could use this nice stock one 271000932,i know...superceeded,BRP's annual trademark lol . its number reference shows a 14/21 98-99 gtx ltd. Woul it give me more bottom? less top end? to many rpms? what...thanks for your input