MAN!!! I need ta' restock the lathe room, LOL

"An actual question" for some of ya. My neighbor's kid, who bought the Atlas, has Phase II tool holders marked 250-***. These near's I can tell are BXA. So I bought a SHARS tool post on the bay, and they don't fit. Anybody? (Holders don't quite go onto the dovetail on the post)

This on the tool post? OR you referring to the whole traveling tool post assembly, and where it rests on the bed way?