Most of the running gear for jet drive, and bow thruster is produced by Graupner, and can be picked up from Hobby Lobby International

Here is Chris Keeler's build up, and a couple of others.

http://www.rcuniverse.com/forum/m_2890431/tm.htm

[8D]

I would contact Harbor Models directly to see if he has one in stock. Not all his product is listed on his website. Or contact http://www.dumasestore.com/ and verify they still produce the kit.

JJC seems to be getting a good reputation for their sound chips. They are available via
http://www.loyalhannadockyard.com/
or
http://www.jjc-electronics.com/