I showed years ago that a 7CT1N could be used in a DSA602A in X/Y mode. There is an album 7CT1N-DSA602 in the photos folder.
There are not many 7000 modules that would be useful in a 11K mainframe if you have access to all true 11K modules.
The 7CT1N and 7A22 look like the best candidates for me.
Christian.
