Just had a lower unit go on my 1989 evinrude 175 motor, and am considering repowering. I have a 1984 22' Grady White walkaround that is labeled as 230hp Max. I have 3 questions that I hope someone can help answer:<br />1) What else is involved in repowering other than the new motor? (i.e. new controls, etc.)<br /><br />2) I heard that 4 strokes are heavier that 2 strokes. Is a 4 stroke 175 motor (like Honda, Suzuki) too heavy for my boat?<br /><br />3) Would anyone recommend factory rebuilt motors, or shoud I go for it with brand new?<br /><br />Thanks for the help.