I've heard there is method to the code names, but im not 100% sure what it is.
What I do know is that the codes that share the same letters are the virtually the same, and the number is something like the revision number.
cnu1 = revision 1 of code cnu, cnu2 = revision 2 of code cnu, etc.
So look for something that shares the same 3 letters.
Another option is to have a chip burned that disables VCT.
Its more than jusst turning the VCT off, the VCT function is used in other parts of the programming.
So somebody familiar with the Contour (or atleast Fords) would be preferable.