You know, I’m not really sure. Maybe Dexter @Torqueboards can help explain. I don’t recognize the baseplate in this pic from your other thread, but since he sent these to you as the DIY/Torqueboards 50° v.2 trucks, they must be the newest version, but a different design. The main thing I notice on these, is that the pivot cup is extended outwards on the baseplate, which is different from the trucks I have.
This is what my TB 50° v.2 trucks (blue) look like, although I got them almost two years ago. They look dimensionally very similar to a genuine Caliber 2, despite some small design differences. They do have a circular pivot nose though, measured at .475". They are next to a TB 218 truck, for reference, which are the TB trucks most of are interested these days, if I’m not mistaken.
And with a Caliber 2 baseplate, for more reference.