Taking a old and low performance brushed power system, and swapping it with brushless makes for a fun project and a fast Brushless rc boat. You will need 120amp flycolor esc, dynamite marine motor, 1.4 pitch 45mm aluminum prop, 3 channel radio and receiver, servo, rudder control system, stability fins, 4mm flex drive shaft, one 4 cell lipo 4200mah battery, motor mount, 3mm rudder control rod, drive dog and lots of JB Weld!