Yes, you can do that. In both T4 files you will find the following line:
This is where you can include a clause like: AND TABLE_NAME IN (..your list of tables..).
Since you are dealing with a legacy database, I would like to mention that the tables should adhere to the Spark data model conventions (in particular the integer Id, the audit fields are optional), otherwise it will not work.
Hope this helps.
Jack Poorte, Sep 23, 2013