Also, Fred can tell you anything about them. Hes the resident expert. Very thankful for the help he has given in the past. Finding one is hard these days. I have two (one for parts) and would never pass up a deal to get a third. Keep looking and you will succeed. All of the manuals for it are available here:
http://devestechnet.com/Home/HowTo#drivelineIt really is a nice improvement to the drivetrain. I really do like the way they work and improve things for today's driving.
