Georeferencing from Autocad MEP to GIS

I have a bunch of 3D models drawn in Autocad MEP, which have the coordinates information but are not georeferenced.

I would like to be able to put them on a GIS map, so I can visualize both the lanscape and urban information I have, with the new Buildings I need to put on it.

Does anyone know how to drive the process?

It would be very helpful to find a replicable way since there are several 3Ds.