Ok I will try to make things clearer guys, these brackets are to hold a trunnion table for a small bench-top CNC.
the tolerances are important for the diameter of the large holes and for the distance between them as they receive dowel pins. Also the cone on the back must have the same tolerance for concentricity.
Other than that, as long as the pats are in a great level same to each other the tolerances can be up to +/- .003
Here is a 3D pdf file.
PS: If the cost of such a part is beyond my budget I m willing to modify it to become 2 parts assembled with guide pins and screws.