I managed to get the subs in the black bar letterbox area where they originally were by making a separate copy of each subtitle shot and then scaling to 16:9, shrinking the area to fit and cropping off everything but the subs, and then overlaying that on top of the black bottom letterbox of the main transfer. All in all it works pretty well. I didn't like the FCP text much anyway.
I'll probably upload these somewhere. Will shoot you a PM when I do so.