Re: 1969 merc
I'm not sure if the lower unit off a 1984 would fit a '69. Only way to know would be to try it. I suspect the reverse lock stuff is different, but I am fairly certain the shift and drive shaft splines are the same. Water should be the same, exhaust down-tube may be, too.<br /> Carbs are completely different - different mounting bolt pattern...<br />- Scott