http://www.sterndrive.info/outboardmotor/ <br /><br />According to this webpage it looks like you should be able to, but I am definitely not an expert.<br /><br />Here's another website that lists part numbers:<br /><br /> http://www.marineparts.com/partspages/Gear/gear6.htm <br /><br />SW-081A 60 thru 75 3 cyl 20"/ Four spline housing 1978 thru 86<br />SW-081B 40 thru 70 3 cyl 20"/ Fine spline housing 1987 thru pr<br />SW-082A 40 thru 60 2 cyl 20"/ Small hub housing 1975 thru 78<br />SW-082B 50 thru 60 2 cyl 20"/ Small hub,zinc housing 1979 thru 92
