Dual helm stations, dual control heads for dual engines

[Scrumble]

I am building a motor/sailing cat, with inboard diesels. The helm locations are at 11m and 4.5m from each engine and the engines are greater than 6m apart (all by cable route).
I wish to have one dual lever control head at each helm and have not dealt with bowden controls in a dual station system before.
My searches for information about how the different brand types of exchangers/transfers/dual station units work in a system has only come up with high level schematics.
I suppose drawings will be available once I purchase a unit or four but this may mean a choice not suitable for the spaces I have available.
I would greatly appreciate some information or direction to a net source I have not been able to find.

[powerabout]

go electric
(cable systems are disappearing)

or Morse Twin SR would be the most common dual entry duel control in the world if you want 4 levers ( never give problems)
Single lever dual station are problematic as you need a slave box to disconnect the other station automatically..always gives problems and can cause you to loose control of gear and throttle.
http://www.teleflexmarine.com/librar...l%20Manual.pdf

[Scrumble]

Thank you, powerabout for the link, its an excellent start.