No, I didn't get very far (I did realize though that any gun games boards are hard to come by). I only made a list of potential gun games that Op Thunderbolt guns can be used with (or Op Thunderbolt cabinet for that matter).
T2 is one of them, but the boards are not compatible plug and play. Pinout is different, and where Op Thunderbolt uses single board architecture, T2 has many boards inside the cab, which all need to be interconnected. So in short - it MAY be possible to convert Op Thunderbolt to T2, but no guarantee that the guns on the cab (coils and pots) are 100% compatible with T2 signals.
BTW, I am still on lookout for working Op Thunderbolt board, so if any leads - let me know.