I have a 1990 alpha 1 out drive with a 1990 mercruiser 3.0 mounted to it. How can I tell if these trim cylinders will work on my setup. they look like the same thing - with the exception of the oval shaped things on the shaft, which I belive to be anodes. Any how, can you guys tell me if this will work. http://cgi.ebay.com/ebaymotors/ws/e...d=1,1&item=4633224019&sspagename=STRK:MEWA:IT <br /><br />Thanks,<br /> TC