Got one. It saved me having to scratch build one and I'm going to use David Merriman's upgrade RC kit and my own design WTC.
Take a look at the David Merriman cabal reports on his build as well as Brain's. We are all good friends and the link is to my forum I created last year.
Enjoy the build folks. And it's not as hard as you might think to RC this boat to be a real sub.
http://www.subpirates.com/viewforum.php?f=30
Steve