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:

Driveshaft change in 60-70hp 2 stroke motors starting in 2004.

Med Jet Kit

For use on – 60HP, 65HP, 70HP Yamaha 2 Stroke Motors

Price: $