In addition to the servos (which I just checked and confirmed my previous post against the manual), here are the other JR parts called for:

4 x JRPA215 Heavy duty servo arms

8 x 24" servo extension leads (2 for ailerons, 4 for elevators, 2 for rudders)

2 x 12" servo extension leads (rudders)

4 x Y harness (1 aileron, 1 elevator, 1 rudder, 1 steering)

Of course, the y harnesses etc. assume that you want to Y the various extensions together. I didn't do that. Per Tony's excellent setup document (available from the BVM site), if you use separate channels for each aileron then you can set up flaperons; if you use seperate rudder vs steering then trimming the tracking on the ground independently of in the air is a breeze, etc.

I'd suggest that you read Tony's doc and assess your options before buying the extensions and Y's.

Gordon