Anyone else using MegaSquirt on a LA motor?

Newbie question, if I wanted to add EFI to my current engine (5.9 Mag with LA top end) using a MegaSquirt system would it be possible to build something that would also be able to control a later Gen 3 Hemi with variable cam timing? I'm guessing most of the 'controls' expense with the G3 Hemi swap would be the physical connectors, wiring harness and sensors?
EFI source sells a plug and play gold box for the hemi. Even has a start up tune.