What should I do?

I have a 64 Dart with the push button tranny. The gear shift control cable dropped onto the exhaust manifold and burned through the housing. Now I have tranny fluid leaking out of the cable.

Two questions :

1. Should there be tranny fluid in the housing, or do I have a bad seal?

2. Should I:
a. Try to patch the problem area with a piece of fuel line, hose clamps...
b. Repalce the housing (if so, where would I get it).
c. Replace the whole cable assembly.

Any input is greatly appreciated.

THANKS!