If should have a serial number stamped into the drive. If you can find it, someone could look it up for you.
Also, if you go to the 'sticky' threads at the top of this forum, click on the Adults Only thread. In it, Item #2 "Mercruiser Information" shows a number of Merc outdrives (just scroll down a bit for the pictures). You might be able to ID it by comparing your drive to the pictures.
