Godin Midi Guitar (This uses a 13 pin connector, so it requires the GR-55)
GR-55 - What the MIDI guitar hooks into so it can produce the MIDI
FS-13 Pedal
K8 Midi Pedal (I don't think he uses in this video, but you can to switch chords)
HS9 - He refers to this to mount on the guitar and have switches to control like the FS-13 pedal