There are several approaches possible to convert Thunderbird files into Outlook PST format but I recommend choosing a professional software eSoftTools Thunderbird to PST Converter. This software has many high-level features that users can quickly use like batch conversion, message filtering, selective conversion, etc. The tool supports more than 25 email client applications such as AppleMail, Eudora, Entourage, Opera, Spicebird, Thunderbird, etc.
For more info- Thunderbird to PST Converter
For more info- Thunderbird to PST Converter