Yep the Fallout 1 port to Tactics is called "Open Fallout Mod" (
https://falloutmods.fandom.com/wiki/Open_Fallout_Mod), but it was really really far from being finished when it was abandonned. I downloaded it and it was mostly just a pack of empty maps. Well done, but no more than that. In my idea, this project you are talking about is too much work to ever be completed by anyone. And if you remember, Fallout 2 is filled to the rim with complex dialogues... and Tactics does not even have a speech dialog tree system, so the project is doomed to fail from the start in my opinion.
Some guys have tried to port Fallout 1 to New Vegas, and included a lot more contents to it than all combined attempt using Tactics engine :
.