Hoping the experts can chime in here. I have an 84 175Evinrude that I am going to swap out however it has a 20 inch shaft. I am looking to repower but the problem I am running in to is that eery motor I come across between a 150-200 is a 25 inch shaft. Can I use a 25 inch? I don't want to get stuck if I buy a motor with a 25 inch shaft.