It'll be difficult to find someone wanting to develop for free for a ~1 year old version. Nothing against you, but that's why the 6.3x mods are in the 'classic' forum...
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.