I am upgrading to a new iTTL housing and this strobe is - unfortunately - not upgradable to the new circuitry. It is in great shape. Had it for three years in use with a Coolpix 5000.
Here's the parts include from the Ikelite website:
#3944.41 Digital Package ($ 500) includes:
#4103.51 TTL Sync Cord
#4044 DS-50 SubStrobe
#4075.1 Strobe Arm system
