So, likely all original inside. Your options are 1.) Sell it 2.) Rebuild as-is. Torque converters are available for those if you need one, but are more limited. 3.) Upgrade the front half of the trans with a later model (after '66) parts trans.
A&A Transmission is a good choice for the converter and other parts you may need. The valve body alone is sought after in your old trans if its not cracked.
