What years will a late 80's 90HP Evinrude factory trim unit fit on other units?? I have a chance to get a great price on an outboard that needs a rebuild and it has power trim on it. Even though the motor needs work, it has a great trim unit assembly. Can someone tell me what years, HP, and models it would fit?? Perhaps I can find a good motor that has manual trim and I can install it??? Thanks for the information.