New Hemi's interchangeable with harness?

With the Hotwire setup you need one of the Diablosport tuners to load the 6.1 tune into the 5.7 computer, not sure what the deal is with the 6.4 though. I think a couple of the sensors/connectors are different between the 5.7 and 6.1, pretty sure you can just use the 5.7 sensors in the 6.1 motor from what I have seen elsewhere.