RE: PZ FW repower questions??
you will need to change both servos also to the standard 3 wire.
What i did for my son was kept the stock motor, changed servo from deceased PZ Spitfire, bought cheap 25 amp brushed ESC, JR receiver to go with JR 7202. For power i use cheap 2200 mah 11.1v 15c battery. Flies beautifully.
Hope this helps