Re: Lower unit questions!
A 20" unit is a long (15" is a short shaft). The gearcase itself is the same between a long and extra long, the driveshaft & shift shaft are the difference. Obviously a shift shat can be changed in minutes, If the d/s is a 2 piece it can be changed in a few minutes. If it's a one piece d/s the reverse gear has to come out to remove the pinion nut.