I am selling the lower unit of a 1965 Mercury 200 20 hp. It should fit other motors all the way up to a 1967. and a few years before 1965. This lower unit is pretty much in mint condition for its age. There is no signs of ware on the skeg. The gears turn nicely and it shifts smoothly. There is no signs of water in the oil, and is in all around great condition. Here is the link to it. http://cgi.ebay.com/ebaymotors/ws/e...viewitem=&item=270268862083&_trksid=p3907.m32 Good Luck!