There are really two cables. And now, there is only one. Ford has discontinued all but the Cougar cable. They are both the same length and as an assembly are interchangable. They accept different cable ends and although the assemblies are interchangable, the cable ends will not interchange.
The Focus uses a similar cable with still different cable ends. The Focus cable is about 2" shorter. The Focus cable ends will work on the early cables, but the Focus shift tower uses a ball end where the cable end connects instead of a straight pin end.
If you use the Focus shift tower you will either need the Focus cable ends on the early cables or you will need to find a way to change the ball ends of the shift tower to the streight ends so that you can use either of the Contour/Cougar cables.
That is probably more than you wanted to know, but basically I don't know of a longer cable unless there is something from europe on still another application using the MTX75 trans that is unknown in the US.
