Jet kits come with all the hardware you need to convert your motor to a jet.  (You will need to use the water pump off of your existing lower unit.)

Notes about this kit:

Length (inches) from housing mounting face to end of driveshaft. Must match propeller gearbox within 1/8 inch. (Motor driveshaft length increased 7/16 inch in 1992. DO NOT USE OLDER MODEL R JET DRIVES ON 1992 MOTORS!)

Heavier load capability than R6 series.

Also fits E-Tec H.O. motors.

Lg Jet Kit

Price: $2791