I am a Bricasti dealer and am familiar. The M3 is a completely different chassis, PS, etc…. I do not believe that there would be a standard upgrade directly with Bricasti as it is a totally different model and footprint. They did not offer an M3 to M1 upgrade for example.
You could trade the DAC to a Bricasti dealer that takes trades but it will much more expensive than the typical $2500 upgrade.